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      <image:title>sandstone - Jurassic fine-grained white Navajo Sandstone, naturally bleached by reducing fluids - teaching hand specimen</image:title>
      <image:caption>sandstone - Jurassic fine-grained white Navajo Sandstone, naturally bleached by reducing fluids - teaching hand specimen - Geological Specimen Supply</image:caption>
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      <image:title>tuff - very pure lithified white volcanic ash mined for Old Dutch Cleanser - teaching hand specimen</image:title>
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      <image:title>dacite - teaching hand specimen of gray porphyritic dacite</image:title>
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      <image:title>fault gouge - hand/display specimen of clay from the San Andreas Fault Zone</image:title>
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      <image:title>calcite - teaching student specimens of naturally brown calcite -  UNIT OF 5 SPECIMENS</image:title>
      <image:caption>calcite - teaching student specimens of naturally brown calcite -  UNIT OF 5 SPECIMENS - Geological Specimen Supply</image:caption>
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      <image:title>limestone - tan silty limestone from the Jurassic Carmel Fm. - teaching hand specimen</image:title>
      <image:caption>limestone - tan silty limestone from the Jurassic Carmel Fm. - teaching hand specimen - Geological Specimen Supply</image:caption>
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    <image:image>
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      <image:title>howlite - set of typical nodules of calcium silicoborate</image:title>
      <image:caption>howlite - set of typical nodules of calcium silicoborate - Geological Specimen Supply</image:caption>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
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      <image:title>tuff breccia -  spectacular pink tuff breccia with large clasts - Student unit of 5 specimens</image:title>
      <image:caption>tuff breccia -  spectacular pink tuff breccia with large clasts - Student unit of 5 specimens - Geological Specimen Supply</image:caption>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
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      <image:title>sand - dune sand - orange-pink frosted sand derived from the Navajo Sandstone - 250 ml display bottle with ground glass stopper</image:title>
      <image:caption>sand - dune sand - orange-pink frosted sand derived from the Navajo Sandstone - 250 ml display bottle with ground glass stopper </image:caption>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
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      <image:title>shale -  teaching hand specimen of soft light tan diatomaceous shale from the Upper Miocene Modelo Formation of California</image:title>
      <image:caption>shale -  teaching hand specimen of soft light tan diatomaceous shale from the Upper Miocene Modelo Formation of California - Geological Specimen Supply</image:caption>
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      <image:title>shale -  teaching hand specimen of tan diatomaceous shale from the Monterey Formation, Ventura County, California.</image:title>
      <image:caption>shale -  teaching hand specimen of tan diatomaceous shale from the Monterey Formation, Ventura County, California. - Geological Specimen Supply</image:caption>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
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    <image:image>
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      <image:title>siltstone - tan siltstone from the Round Mountain Silt member of the Temblor Formation - teaching hand/display specimen</image:title>
      <image:caption>siltstone - tan siltstone from the Round Mountain Silt member of the Temblor Formation - teaching hand/display specimen - Geological Specimen Supply</image:caption>
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    <image:image>
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      <image:title>tuff - very pure lithified white volcanic ash formerly mined for Old Dutch Cleanser - Unit of 5 Student Specimens</image:title>
      <image:caption>tuff - very pure lithified white volcanic ash - Unit of 5 Student Specimens </image:caption>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/products/magnets.jpg?v=1527571310</image:loc>
      <image:title>magnets - set of five ceramic ring magnets 1.5 inch diameter by .125 inch thick</image:title>
      <image:caption>magnets - set of five ceramic ring magnets 1.5 inch diameter by .125 inch thick </image:caption>
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    <image:image>
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      <image:title>graywacke -  teaching student specimens of a tan dirty sandstone -  Unit of 5 specimens</image:title>
      <image:caption>graywacke -  teaching student specimens of a tan dirty sandstone -  Unit of 5 specimens - Geological Specimen Supply</image:caption>
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  <url>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/AltamirashaleST.jpg?v=1765174542</image:loc>
      <image:title>shale  -  student specimens of a siliceous Miocene shale, a subunit of the Monterey Formation - Unit of 5 student specimens</image:title>
      <image:caption>shale  -  student specimens of a siliceous Miocene shale, a subunit of the Monterey Formation - Unit of 5 student specimens - Geological Specimen Supply</image:caption>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
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    <image:image>
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      <image:title>sandstone - fine grained - teaching hand specimen of an unusual arkose</image:title>
      <image:caption>sandstone - fine grained - teaching hand specimen of an unusual arkose - Geological Specimen Supply</image:caption>
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  </url>
  <url>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/anothosite.jpg?v=1764663237</image:loc>
      <image:title>anorthosite - gray/white anorthosite similar to the specimens brought back from the moon by the Apollo astronauts - hand/display specimen</image:title>
      <image:caption>anorthosite - gray/white anorthosite similar to the specimens brought back from the moon by the Apollo astronauts - hand/display specimen - Geological Specimen Supply</image:caption>
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  <url>
    <loc>https://geologicalspecimensupply.com/products/siltstone-teaching-student-specimens-of-tan-siltstone-unit-of-5-specimens</loc>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/products/siltstoneRndMtnSt.jpg?v=1636871946</image:loc>
      <image:title>siltstone - teaching student specimens of tan siltstone from the Round Mountain unit of the Temblor Formation - UNIT OF 5 SPECIMENS</image:title>
      <image:caption>siltstone - teaching student specimens of tan siltstone from the Round Mountain unit of the Temblor Formation - UNIT OF 5 SPECIMENS - Geological Specimen Supply</image:caption>
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      <image:title>study set of rocks and minerals - buyer selected set of 5 student specimens</image:title>
      <image:caption>study set of rocks and minerals - buyer selected set of 5 student specimens </image:caption>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/RawlinsRedscreenedcopy.jpg?v=1713069064</image:loc>
      <image:title>red ochre - Rawlins Red, the pigment used in the first coat of paint on cables of the Brooklyn Bridge - set of 5 tubes of this natural pigment</image:title>
      <image:caption>red ochre - Rawlins Red, the pigment used in the first coat of paint on cables of the Brooklyn Bridge - set of 5 tubes of this natural pigment - Geological Specimen Supply</image:caption>
    </image:image>
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  <url>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/altamirashaleH7.5kpencoin.jpg?v=1721605338</image:loc>
      <image:title>shale - tan siliceous Altamira Shale from the Miocene of California - teaching hand specimen</image:title>
      <image:caption>shale - tan siliceous Altamira Shale from the Miocene of California - teaching hand specimen - Geological Specimen Supply</image:caption>
    </image:image>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/shaleHarklessgreenH9.5kpcl.jpg?v=1749805343</image:loc>
      <image:title>shale - hard green Lower Cambrian shale from the Harkless Formation - teaching hand specimen</image:title>
      <image:caption>shale - hard green Lower Cambrian shale from the Harkless Formation - teaching hand specimen - Geological Specimen Supply</image:caption>
    </image:image>
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  <url>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/products/shale_-_Carmel_st.jpg?v=1545715924</image:loc>
      <image:title>shale  -  student specimens of a tan limey shale from the Jurassic Carmel Formation, Utah - UNIT OF 5 SPECIMENS</image:title>
      <image:caption>shale  -  student specimens of a tan limey shale from the Jurassic Carmel Formation, Utah - UNIT OF 5 SPECIMENS </image:caption>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/Navajoredst.jpg?v=1737946503</image:loc>
      <image:title>sandstone  -  Navajo sandstone teaching student specimens - Unit of 5 specimens</image:title>
      <image:caption>sandstone  -  Navajo sandstone teaching student specimens - Unit of 5 specimens - Geological Specimen Supply</image:caption>
    </image:image>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/shalecarmelH7.5kpcl2coins.jpg?v=1721608941</image:loc>
      <image:title>shale  -  teaching hand specimen of a Jurassic tan limey shale from the Carmel Formation of Utah</image:title>
      <image:caption>shale  -  teaching hand specimen of a Jurassic tan limey shale from the Carmel Formation of Utah - Geological Specimen Supply</image:caption>
    </image:image>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/products/pumice_Coso_white_st.jpg?v=1558416106</image:loc>
      <image:title>pumice - typical white pumice that floats like a duck - Unit of 5 student specimens</image:title>
      <image:caption>pumice -  teaching student specimens of typical white pumice that floats like a duck - UNIT OF 5 SPECIMENS </image:caption>
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  <url>
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      <image:title>rhyolite porphyry - pinkish tan porphyritic rhyolite - Unit of 5 student specimens</image:title>
      <image:caption>rhyolite porphyry - pinkish tan porphyritic rhyolite - Unit of 5 student specimens - Geological Specimen Supply</image:caption>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/sandMenefee5tubes.jpg?v=1719989340</image:loc>
      <image:title>sand - dune sand - fine-grained yellow-brown dune sand derived from a sandstone member of the Menefee Formation in New Mexico - set of 5 tubes</image:title>
      <image:caption>sand - dune sand - fine-grained yellow-brown dune sand derived from a sandstone member of the Menefee Formation in New Mexico - set of 5 tubes - Geological Specimen Supply</image:caption>
    </image:image>
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    <image:image>
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      <image:title>sand - dune sand - orange-pink dune sand with frosted iron-oxide coated grains derived from the Navajo sandstone - set of 5 tubes</image:title>
      <image:caption>sand - dune sand - orange-pink dune sand with frosted iron-oxide coated grains derived from the Navajo sandstone - set of 5 tubes </image:caption>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
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      <image:title>sand - single tube of any sand we have in stock - make your own set at $2.70 per tube. Five sand types are shown</image:title>
      <image:caption>sand - single tube of any sand we have in stock - make your own set at $2.70 per tube. Five sand types are shown - Geological Specimen Supply</image:caption>
    </image:image>
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  <url>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/Bishoptuffpumiceclastsst.jpg?v=1749806813</image:loc>
      <image:title>tuff - rhyolitic tuff with pumice clasts - a classic ignimbrite or pumice-dominated pyroclastic deposit  -  Unit of 5 student specimens</image:title>
      <image:caption>tuff - rhyolitic tuff with pumice clasts - a classic ignimbrite or pumice-dominated pyroclastic deposit  -  Unit of 5 student specimens - Geological Specimen Supply</image:caption>
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    <image:image>
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      <image:title>diatomite - teaching hand specimen of lacustrine diatomite from Mineral County, Nevada</image:title>
      <image:caption>diatomite - teaching hand specimen of lacustrine diatomite from Mineral County, Nevada - Geological Specimen Supply</image:caption>
    </image:image>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
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    <image:image>
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      <image:title>pumice - teaching hand specimen of glassy gray pumice</image:title>
      <image:caption>pumice - teaching hand specimen of glassy gray pumice - Geological Specimen Supply</image:caption>
    </image:image>
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      <image:title>pyroclastic tuff balls - set of unusual tuff snowballs</image:title>
      <image:caption>pyroclastic tuff balls - set of unusual tuff snowballs - Geological Specimen Supply</image:caption>
    </image:image>
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  <url>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>tuff - rhyolitic tuff with pumice clasts - a classic ignimbrite or pumice-dominated pyroclastic deposit - teaching hand/display specimen</image:title>
      <image:caption>tuff - rhyolitic tuff with pumice clasts - a classic ignimbrite or pumice-dominated pyroclastic deposit - teaching hand/display specimen - Geological Specimen Supply</image:caption>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/stevenscore12.5kpcl.jpg?v=1771055942</image:loc>
      <image:title>sandstone - medium grained gray - 4&quot; diameter oil well core section from the Stevens Sand</image:title>
      <image:caption>sandstone - medium grained gray - 4&quot; diameter oil well core section from the Stevens Sand - Geological Specimen Supply</image:caption>
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  <url>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/obsidianMontgomeryPassH9.5pclsidea.jpg?v=1762843025</image:loc>
      <image:title>obsidian - black obsidian - Montgomery Pass, Nevada - hand specimen</image:title>
      <image:caption>obsidian - black obsidian - Montgomery Pass, Nevada - hand specimen - Geological Specimen Supply</image:caption>
    </image:image>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/ssRidgeRtFmyellowbrownST.jpg?v=1718524892</image:loc>
      <image:title>sandstone - yellow-brown medium-grained non-marine Miocene sandstone - Unit of 5 student specimens</image:title>
      <image:caption>sandstone - yellow-brown medium-grained non-marine Miocene sandstone - Unit of 5 student specimens - Geological Specimen Supply</image:caption>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
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      <image:title>limestone - hand/display specimen showing typical dissolved surface found in arid climates - Lower Cambrian Chambless Limestone, Marble Mountains, Calif.</image:title>
      <image:caption>limestone - hand/display specimen showing typical dissolved surface found in arid climates - Lower Cambrian Chambless Limestone, Marble Mountains, Calif. - Geological Specimen Supply</image:caption>
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  <url>
    <loc>https://geologicalspecimensupply.com/products/biotite-mica-teaching-student-specimens-collected-from-a-pegmatite-at-cardiff-ontario-unit-of-5-specimens</loc>
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    <changefreq>daily</changefreq>
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      <image:title>biotite mica - teaching student specimens collected from a pegmatite at Cardiff, Ontario - Unit of 5 specimens</image:title>
      <image:caption>biotite mica - teaching student specimens collected from a pegmatite at Cardiff, Ontario - Unit of 5 specimens - Geological Specimen Supply</image:caption>
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  <url>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/dendritesOregonH_D9.5kpencoins.jpg?v=1747125647</image:loc>
      <image:title>dendrites - hand/display specimen of manganese oxide dendrites</image:title>
      <image:caption>dendrites - hand/display specimen of manganese oxide dendrites - Geological Specimen Supply</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/biotiteH9.5kpclcoin.jpg?v=1762133000</image:loc>
      <image:title>biotite - cleavage plate from a pegmatite near Cardiff, Ontario - hand specimen</image:title>
      <image:caption>biotite - cleavage plate from a pegmatite near Cardiff, Ontario - hand specimen - Geological Specimen Supply</image:caption>
    </image:image>
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  <url>
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    <image:image>
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      <image:title>dendrites - teaching hand specimen of manganese oxide dendrites</image:title>
      <image:caption>dendrites - teaching hand specimen of manganese oxide dendrites - Geological Specimen Supply</image:caption>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/products/sandgarnetiferoustubes.jpg?v=1608447899</image:loc>
      <image:title>sand - garnetiferous sand composed primarily of quartz and garnet from Pfeiffer Beach, California - set of 5 tubes</image:title>
      <image:caption>sand - garnetiferous sand composed primarily of quartz and garnet from Pfeiffer Beach, California - set of 5 tubes - Geological Specimen Supply</image:caption>
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  <url>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/sandgarnetiferousjars.jpg?v=1759457833</image:loc>
      <image:title>sand - garnetiferous sand composed primarily of quartz and garnet from Pfeiffer Beach, California - set of two 2-ounce jars</image:title>
      <image:caption>sand - garnetiferous sand composed primarily of quartz and garnet from Pfeiffer Beach, California - set of two 2-ounce jars - Geological Specimen Supply</image:caption>
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  <url>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/magnesiteNevadatanst.jpg?v=1735467014</image:loc>
      <image:title>magnesite - teaching student specimens of light tan porous magnesite from the Windous Butte magnesite deposit, Nevada - unit of 5 student specimens</image:title>
      <image:caption>magnesite - teaching student specimens of light tan porous magnesite from the Windous Butte magnesite deposit, Nevada - unit of 5 student specimens - Geological Specimen Supply</image:caption>
    </image:image>
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  <url>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/diatomiteMontereyNewportH7.5kpclcoin.jpg?v=1712210814</image:loc>
      <image:title>diatomite - teaching hand specimen of Miocene marine diatomite from the Monterey Formation of California, Newport Back Bay locality</image:title>
      <image:caption>diatomite - teaching hand specimen of Miocene marine diatomite from the Monterey Formation of California, Newport Back Bay locality - Geological Specimen Supply</image:caption>
    </image:image>
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  <url>
    <loc>https://geologicalspecimensupply.com/products/shale-teaching-hand-specimen-of-light-tan-diatomaceous-shale-from-the-monterey-formation-santa-barbara-co-california</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>shale - teaching hand specimen of light tan diatomaceous shale from the Monterey Formation, Santa Barbara Co., California</image:title>
      <image:caption>shale - teaching hand specimen of light tan diatomaceous shale from the Monterey Formation, Santa Barbara Co., California </image:caption>
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  <url>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>anthracite - teaching hand/display specimen of metamorphic &quot;hard coal&quot; from eastern Pennsylvania</image:title>
      <image:caption></image:caption>
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  <url>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/burnedshaleH9.5pcl4.jpg?v=1751160626</image:loc>
      <image:title>burned shale - teaching hand specimen of burned shale from the Monterey Formation, Ventura County, California</image:title>
      <image:caption>burned shale - teaching hand specimen of burned shale from the Monterey Formation, Ventura County, California - Geological Specimen Supply</image:caption>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/greentuffH_D9.5pcl2coins.jpg?v=1775888476</image:loc>
      <image:title>tuff - copper-stained green welded tuff - teaching hand/display specimen</image:title>
      <image:caption></image:caption>
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  <url>
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      <image:title>sand - dune sand - orange-pink sand derived from the Navajo Sandstone - set of two 2-ounce jars</image:title>
      <image:caption>sand - dune sand - orange-pink sand derived from the Navajo Sandstone - set of two 2-ounce jars </image:caption>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/products/perlite_popped_unpopped_jars.jpg?v=1528527102</image:loc>
      <image:title>perlite - screened and partially dried perlite pellets and popped perlite - set of two 2-ounce jars</image:title>
      <image:caption>perlite - screened and partially dried perlite pellets and popped perlite - set of two 2-ounce jars </image:caption>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/April15.2026.jpg?v=1776316293</image:loc>
      <image:title>Dendraster gibbsii (Rémond, 1863) - late Miocene to Pliocene fossil sand dollar</image:title>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/calcitebrownH9.5pcl.jpg?v=1764136793</image:loc>
      <image:title>calcite - teaching hand specimen of naturally-brown calcite</image:title>
      <image:caption>calcite - teaching hand specimen of naturally-brown calcite - Geological Specimen Supply</image:caption>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>talc - soft white talc from the Acme Mine, Alexander Hills, San Bernardino County, California -  hand/display specimen</image:title>
      <image:caption>talc - soft white talc from the Acme Mine, Alexander Hills, San Bernardino County, California -  hand/display specimen - Geological Specimen Supply</image:caption>
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    <image:image>
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      <image:title>granite - teaching hand/display specimen of typical granite</image:title>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
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      <image:title>sandstone - fine grained - teaching hand/display specimen of an unusual arkose</image:title>
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    <loc>https://geologicalspecimensupply.com/products/copy-of-sandstone-teaching-hand-specimen-of-white-to-cream-fine-grained-springdale-sandstone-member-of-the-moenave-formation</loc>
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    <changefreq>daily</changefreq>
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      <image:title>sandstone - white to cream fine-grained Springdale Sandstone Member of the Moenave Formation, a unique silver ore - teaching hand/display specimen</image:title>
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  <url>
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      <image:title>kaolinite - soft white kaolin - teaching student specimens of the primary constituent of kaolin clay - Unit of 5 specimens</image:title>
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  <url>
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      <image:title>mudstone - teaching student specimens of diatomaceous mudstone from the Sisquoc Formation, Santa Barbara County, Calif. - Unit of 5 specimens</image:title>
      <image:caption>mudstone - teaching student specimens of diatomaceous mudstone from the Sisquoc Formation, Santa Barbara County, Calif. - Unit of 5 specimens - Geological Specimen Supply</image:caption>
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      <image:caption>asbestos - tremolite (amphibole) asbestos - teaching hand specimen of fibers in a screw-cap pyrex tube - Geological Specimen Supply</image:caption>
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      <image:caption>red ochre -- set of 5 tubes of this natural iron oxide pigment </image:caption>
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      <image:title>mudstone - teaching hand specimen of diatomaceous mudstone from the Sisquoc Formation, Santa Barbara County, Calif.</image:title>
      <image:caption>mudstone - teaching hand specimen of diatomaceous mudstone from the Sisquoc Formation, Santa Barbara County, Calif. </image:caption>
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      <image:title>magnesite - hand specimen of light tan porous magnesite - Windous magnesite deposit, Westvaco Mine</image:title>
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      <image:caption>shale - teaching student specimens of light tan diatomaceous shale from the Monterey Formation, Santa Barbara Co., California  - Unit of 5 specimens </image:caption>
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      <image:title>peridotite xenolith in vesicular phonotephrite from the San Carlos Volcanic Field, Arizona - hand/display specimen</image:title>
      <image:caption>peridotite xenolith in vesicular phonotephrite from the San Carlos Volcanic Field, Arizona - hand/display specimen - Geological Specimen Supply</image:caption>
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      <image:title>monzosyenite - hand specimen of an unusual igneous rock from the Laramie anorthosite complex, Wyoming</image:title>
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      <image:title>calcite - teaching hand/display specimen of massive naturally-brown calcite</image:title>
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      <image:caption>sand - dune sand - fine-grained yellow-brown dune sand derived from a sandstone member of the Menefee Formation in New Mexico - set of two 2-ounce jars </image:caption>
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      <image:title>barite rose - teaching set of barite roses from the Garber Sandstone near Noble, east of Norman, Oklahoma</image:title>
      <image:caption>barite rose - teaching set of barite roses from the Garber Sandstone near Noble, east of Norman, Oklahoma - Geological Specimen Supply</image:caption>
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      <image:title>gneiss - hand/display specimen of a Proterozoic granite gneiss</image:title>
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      <image:title>tuff breccia - hand specimen of a spectacular pink tuff breccia</image:title>
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      <image:title>dacite - teaching hand/display specimen of gray porphyritic dacite, a rock common in the Archean continents</image:title>
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      <image:title>rhyolite porphyry - light pink rhyolite with small phenocrysts - hand/display specimen</image:title>
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      <image:title>tuff breccia - display specimen of a spectacular tuff breccia with a variety of clast types embedded in the pinkish ash</image:title>
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      <image:title>Antique chromolithograph butterfly plate from Macrolepidoptera of the World, Volume 5, Dr. Adelbert Seitz, Editor. Athyrtis - Mechanitis - Plate 33</image:title>
      <image:caption>Antique chromolithograph butterfly plate from Macrolepidoptera of the World, Volume 5, Dr. Adelbert Seitz, Editor. Athyrtis - Mechanitis </image:caption>
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      <image:caption>Antique chromolithograph butterfly plate from Macrolepidoptera of the World, Volume 5, Dr. Adelbert Seitz, Editor. Eueides </image:caption>
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      <image:title>conglomerate - hand/display specimen of conglomeratic limestone from the Brian Head Formation</image:title>
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      <image:caption>peat - hand specimen of peat from the San Andreas fault zone, formed in a marsh that dried out roughly a century ago - Geological Specimen Supply</image:caption>
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      <image:caption>peat - peat from the San Andreas fault zone, formed in a marsh that dried out roughly a century ago - large hand/display specimen - Geological Specimen Supply</image:caption>
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      <image:title>chert - banded chert from the Monterey Formation, California - display specimen</image:title>
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      <image:title>pumice - teaching hand/display specimen of typical white pumice from a pumice sheet in the Coso geothermal area</image:title>
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      <image:title>sandstone  -  teaching hand/display specimen of the Navajo Sandstone, a fine-grained orange-pink aeolian sandstone</image:title>
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      <image:title>conglomerate - display specimen of the Shinarump Conglomerate, Triassic, Hurricane Mesa, Utah</image:title>
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      <image:title>graywacke - teaching hand/display specimen of an Upper Cretaceous tan graywacke from the Sites Formation</image:title>
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      <image:title>limestone - very light tan lacustrine limestone from the Eocene Green River Formation - teaching hand specimen</image:title>
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      <image:title>limestone - very light tan lacustrine limestone from the Eocene Green River Formation - teaching hand/display specimen</image:title>
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      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/amethystBrazilst.jpg?v=1743150125</image:loc>
      <image:title>amethyst - crystal clusters - set of five student specimens from Brazil</image:title>
      <image:caption>amethyst - crystal clusters - set of five student specimens from Brazil - Geological Specimen Supply</image:caption>
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      <image:title>porcelanite - formed from the reprecipitation of silica during the conversion of siliceous sediments to sedimentary rock - Monterey Formation, CA - teaching hand specimen</image:title>
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      <image:title>diatomite - teaching hand specimen of the Valmonte diatomite, a unit of the Monterey Formation of California</image:title>
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      <image:title>serpentine - teaching hand specimen from the Melones fault zone</image:title>
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      <image:title>sand - large-grained quartz dune sand from Monastery Beach, Carmel Bay, California - set of 5 tubes</image:title>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>kaolinite - hard vitreous kaolin - hand/display specimen of the primary constituent of kaolin clay</image:title>
      <image:caption></image:caption>
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      <image:title>oil sand - Graciosa coarse-grained member of the Careaga sandstone impregnated with oil from the underlying Monterey Formation - hand/display specimen</image:title>
      <image:caption>oil sand - Graciosa coarse-grained member of the Careaga sandstone impregnated with oil from the underlying Monterey Formation - hand/display specimen - Geological Specimen Supply</image:caption>
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      <image:title>limestone - tan silty limestone from the Jurassic Carmel Fm. - hand/display specimen</image:title>
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      <image:title>sand - beach sand with a high percentage of glass grains - set of 5 tubes</image:title>
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      <image:title>shale - siliceous McLure Shale member of the Miocene Monterey Formation - hand specimen</image:title>
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      <image:title>amber - fossil resin from a tropical forest tree in Indonesian Borneo</image:title>
      <image:caption>amber - fossil resin from a tropical forest tree in Indonesian Borneo - Geological Specimen Supply</image:caption>
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      <image:title>sand - coarse beach sand with a high percentage of glass grains - set of two 2-ounce jars</image:title>
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      <image:title>kaolinite - soft white kaolin - hand/display specimen of the primary constituent of kaolin clay</image:title>
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      <image:title>claystone - teaching hand/display specimen of diatomaceous claystone from the Sisquoc Formation, Santa Barbara County, Calif.</image:title>
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      <image:title>chert - banded chert from the Monterey Formation, California - large hand/display specimen</image:title>
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      <image:title>sand - gypsum sand from Lake Lucero - set of five tubes</image:title>
      <image:caption>sand - gypsum sand from Lake Lucero - set of five tubes - Geological Specimen Supply</image:caption>
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      <image:title>sand - gypsum sand from Lake Lucero - set of two 2-ounce jars</image:title>
      <image:caption>sand - gypsum sand from Lake Lucero - set of two 2-ounce jars - Geological Specimen Supply</image:caption>
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      <image:title>sand - gypsum sand from Lake Lucero - 250 ml glass display bottle with ground glass stopper</image:title>
      <image:caption>sand - gypsum sand from Lake Lucero - 250 ml glass display bottle with ground glass stopper - Geological Specimen Supply</image:caption>
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      <image:caption>sand - dune sand - orange-tan dune sand with iron-oxide coated grains derived from the Navajo sandstone in the San Rafael Swell - set of 5 tubes - Geological Specimen Supply</image:caption>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
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    <image:image>
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      <image:title>sand - orange-tan dune sand with iron-oxide coated grains derived from the Navajo sandstone in the San Rafael Swell - set of two 2-ounce jars</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/Stevenscoreslice9.5kpencoin2.jpg?v=1718092021</image:loc>
      <image:title>sandstone - medium grained gray - 4&quot; diameter oil well core slice from the Stevens Sand - hand specimen</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/copy-of-geode-teaching-hand-specimen-of-a-typical-unopened-geode</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/geodebubblesMexicoH_D15pclsidea.jpg?v=1772764988</image:loc>
      <image:title>geode - bubble-filling geode - large hand/display specimen</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/copy-of-galena-teaching-student-specimens-of-the-primary-ore-of-lead-unit-of-5-specimens-1</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/fluoriteDgoH_D15pcl.jpg?v=1773044329</image:loc>
      <image:title>fluorite - massive fluorite - a mineral often associated with metallic ores - hand/display specimen</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/fluoriteNavidadMineS.jpg?v=1744502319</image:loc>
      <image:title>fluorite - student specimens of a mineral often associated with metallic ores - massive fluorite - Unit of 5 specimens</image:title>
      <image:caption>fluorite - student specimens of a mineral often associated with metallic ores - massive fluorite - Unit of 5 specimens - Geological Specimen Supply</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/copy-of-fluorite-student-specimens-of-a-mineral-often-associated-with-metallic-ores-massive-fluorite-unit-of-5-specimens</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/fluoriteDgoH9.5pcl2coins.jpg?v=1773045037</image:loc>
      <image:title>fluorite - teaching hand specimen of a mineral often associated with metallic ores - massive fluorite</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/kaolinite-soft-kaolin-teaching-hand-display-specimen-of-the-primary-constituent-of-kaolin-clay</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/kaolinH7.5pcl3coins.jpg?v=1756021662</image:loc>
      <image:title>kaolinite - soft white kaolin - teaching hand specimen of the primary constituent of kaolin clay</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/copy-of-monzosyenite-display-specimen-of-an-unusual-igneous-rock-from-the-laramie-anorthosite-complex-wyoming-1</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/monzosyeniteH_D9.5pcl.jpg?v=1776671836</image:loc>
      <image:title>monzosyenite - hand/display specimen of an unusual igneous rock from the Laramie anorthosite complex, Wyoming</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/copy-of-sandstone-yellow-brown-medium-grained-moderately-lithified-miocene-sandstone-teaching-hand-display-specimen-1</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/sandstoneRidgeRtFmH_D9.5kpcl.jpg?v=1749113562</image:loc>
      <image:title>sandstone - yellow-brown medium-grained moderately lithified Miocene sandstone - hand/display specimen</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/phyllite-hand-specimen-of-a-silvery-gray-paleozoic-phyllite</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/phylliteShooFlyH9.5pcl4coins_46e6591e-2c6f-4f26-924c-11b229259867.jpg?v=1765176998</image:loc>
      <image:title>phyllite - hand specimen of a silvery to dark gray Paleozoic phyllite from the Shoo Fly Complex</image:title>
      <image:caption>phyllite - hand specimen of a silvery to dark gray Paleozoic phyllite from the Shoo Fly Complex - Geological Specimen Supply</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/copy-of-tuff-breccia-hand-display-specimen-of-a-spectacular-pink-tuff-breccia</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/tuffbreccialgD17.5.jpg?v=1772875994</image:loc>
      <image:title>tuff breccia - large display specimen of a spectacular pink tuff breccia</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/copy-of-sandstone-teaching-hand-specimen-of-jurassic-fine-grained-white-navajo-sandstone-naturally-bleached-by-reducing-fluids</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/NavajosandstonewhiteH_D7.5kpcl3coins.jpg?v=1697705535</image:loc>
      <image:title>sandstone - Jurassic fine-grained white Navajo Sandstone, naturally bleached by reducing fluids - hand/display specimen</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/olivineandcoralsandtubeset.jpg?v=1708854494</image:loc>
      <image:title>sand - olivine and coral - set of five tubes of olivine sand weathered from basalt with coral sand derived from a reef</image:title>
      <image:caption>sand - olivine and coral - set of five tubes of olivine sand weathered from basalt with coral sand derived from a reef - Geological Specimen Supply</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/smoky-quartz-point-hand-specimen</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/smokyquartzpointH7.5kpclcoin.jpg?v=1709531231</image:loc>
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      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/smokyquartzSTset7.5.jpg?v=1709533926</image:loc>
      <image:title>smoky quartz points - student unit of 5 specimens</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/agate-polished-slice-from-an-agate-filled-geode-from-brazil</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/agateslice7.5kpen2coins.jpg?v=1766388978</image:loc>
      <image:title>agate - polished slice from an agate-filled geode from Brazil</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/kyanite-crystals-in-quartz-minas-gerais-brazil-hand-display-specimen</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/kyaniteH_D20pcl2coins2.jpg?v=1775286777</image:loc>
      <image:title>kyanite crystals in quartz -  São José de Safira, Minas Gerais, Brazil - hand/display specimen</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/kyanite-crystals-in-quartz-minas-gerais-brazil-hand-specimen</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/kyaniteH12.5pclcoin.jpg?v=1775286992</image:loc>
      <image:title>kyanite crystals in quartz -  São José de Safira, Minas Gerais, Brazil - hand specimen</image:title>
      <image:caption></image:caption>
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  </url>
  <url>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/kyaniteblueBrazilD45kpclcoin.jpg?v=1741226430</image:loc>
      <image:title>kyanite crystals in quartz - São José de Safira, Minas Gerais, Brazil - display specimen</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/galena-teaching-student-specimens-of-the-primary-ore-of-lead-with-matrix-talsinte-morocco-unit-of-5-specimens-copy</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/galena-TalsintMorocco-ST.jpg?v=1744506375</image:loc>
      <image:title>galena - teaching student specimens of the primary ore of lead with attached matrix - Talsint (?) Morocco - Unit of 5 specimens</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/kyaniteblackH9.3pcl3coins2.jpg?v=1775891179</image:loc>
      <image:title>kyanite - black kyanite in a spray of fine crystals, from São José de Safira, Minas Gerais, Brazil - hand specimen</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/limestone-hand-display-specimen-showing-typical-dissolved-surface-found-in-arid-climates-lower-cambrian-chambless-limestone-marble-mountains-calif-copy</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/tufaLahontanH_D15pcl.jpg?v=1776674203</image:loc>
      <image:title>tufa - hand/display specimen from the paleoshoreline of ice age Lake Lahontan</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/peat-silty-peat-from-the-san-andreas-fault-zone-formed-in-a-marsh-that-dried-out-roughly-a-century-ago-large-display-specimen</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/peatsiltylgD20kpclcoin_29b259ea-a277-4531-8b71-ef3193aff5c9.jpg?v=1768013266</image:loc>
      <image:title>peat - silty peat from the San Andreas fault zone, formed in a marsh that dried out roughly a century ago - large display specimen</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/bituminouscoalBronco10small.jpg?v=1726130492</image:loc>
      <image:title>bituminous coal - Bronco Mine, Emery County, Utah - Unit of 10 smaller student specimens</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/ironstoneconcretionfromMadagascarH9.5kpencoin.jpg?v=1761461777</image:loc>
      <image:title>concretions - ironstone concretion from Madagascar - hand specimen</image:title>
      <image:caption></image:caption>
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  </url>
  <url>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/tufaLahontanlgH_D20pcl.jpg?v=1775288950</image:loc>
      <image:title>tufa - large hand/display specimen from the paleoshoreline of ice age Lake Lahontan</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/botryoidalhematiteH7.5kpencoins.jpg?v=1740208107</image:loc>
      <image:title>hematite - botryoidal hematite from Morocco - teaching hand specimen</image:title>
      <image:caption></image:caption>
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  </url>
  <url>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/sandseleniteroseMoroccolgH_D20kpcl2coins.jpg?v=1747028759</image:loc>
      <image:title>gypsum - sand selenite rose from a dry lake near Oujda, Morocco - large hand/display specimen</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/sandseleniteroseMoroccoH_D12.5kpcl3coins.jpg?v=1761974323</image:loc>
      <image:title>gypsum - sand selenite rose from a dry lake near Oujda, Morocco - hand/display specimen</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/fulguritelongerpair16.5pclcoin.jpg?v=1765014722</image:loc>
      <image:title>fulgurite - pair of longer than average natural glass tubes formed by lightning strikes on sand</image:title>
      <image:caption>fulgurite - pair of longer than average natural glass tubes formed by lightning strikes on sand - Geological Specimen Supply</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>gypsum - sand selenite rose from a dry lake near Oujda, Morocco - hand  specimen</image:title>
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  </url>
  <url>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/muscoviteCoronelMurta_MinasGeraisH_D12.5kpclcoin.jpg?v=1750670848</image:loc>
      <image:title>muscovite mica from a pegmatite near Coronel Murta, Minas Gerais, Brazil - hand/display  specimen</image:title>
      <image:caption>muscovite mica from a pegmatite near Coronel Murta, Minas Gerais, Brazil - hand/display  specimen - Geological Specimen Supply</image:caption>
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  <url>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
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      <image:title>limonite - hand specimen of limonite - hydrated iron oxides -  from the cap of a hydrothermal vein at the Keeler Gold Mine</image:title>
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  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/peat-hand-display-specimen-of-peat-from-the-san-andreas-fault-zone-formed-in-a-marsh-that-dried-out-roughly-a-century-ago-1</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
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    <image:image>
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      <image:caption>peat - hand/display specimen of peat from the San Andreas fault zone, formed in a marsh that dried out roughly a century ago - Geological Specimen Supply</image:caption>
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  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/phyllite-teaching-student-specimens-of-jurassic-schistose-phyllite-unit-of-5-specimens-copy</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/gneiss-red.jpg?v=1751271671</image:loc>
      <image:title>orthogneiss - mid to late Proterozoic, St. Jerome, Quebec - unit of 5 student specimens</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/muscovite-mica-from-a-pegmatite-near-coronel-murta-minas-gerais-brazil-display-specimen</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/muscoviteCoronelMurtaD15pclcoin_6e6aea54-d737-49f3-910c-f6e2081a6355.jpg?v=1751617234</image:loc>
      <image:title>muscovite mica from a pegmatite near Coronel Murta, Minas Gerais, Brazil - display  specimen</image:title>
      <image:caption>muscovite mica from a pegmatite near Coronel Murta, Minas Gerais, Brazil - display  specimen - Geological Specimen Supply</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/limestone-oncolitic-limestone-showing-typical-dissolved-surface-found-in-arid-climates-lower-cambrian-chambless-limestone-marble-mountains-calif-large-hand-display-specimen</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/oncoliticlimestoneLgH_D12.5pcl_4d956b92-88e9-44a3-9e52-19192192bab4.jpg?v=1765175518</image:loc>
      <image:title>limestone - oncolitic limestone showing typical dissolved surface found in arid climates - Lower Cambrian Chambless Limestone, Marble Mountains, Calif. - large hand/display specimen</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/kaolinite-soft-white-kaolin-large-hand-display-specimen-of-the-primary-constituent-of-kaolin-clay</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/kaolinitelgH_D12.5pcl3coins.jpg?v=1756021548</image:loc>
      <image:title>kaolinite - soft white kaolin - large hand/display specimen of the primary constituent of kaolin clay</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/sand-coarse-sand-composed-of-polished-chert-grains-derived-from-the-francisca-complex-set-of-two-2-ounce-jars</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/sandRodeoBeachjars.jpg?v=1759460536</image:loc>
      <image:title>sand - coarse sand composed of polished chert grains derived from the Franciscan complex - set of two 2-ounce jars</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/sand-coarse-sand-composed-of-polished-chert-grains-derived-from-the-franciscan-complex-set-of-two-2-ounce-jars-copy</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/sandRodeoBeachtubes.jpg?v=1759462147</image:loc>
      <image:title>sand - coarse sand composed of polished chert grains derived from the Franciscan Complex - set of five tubes</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/migmatite-gneiss-a-gneiss-that-shows-remelting-from-india-display-specimen</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/migmatiteIndiaD40pen2coins14_2e43ef83-0987-4fa6-bffb-5eee048f3fb8.jpg?v=1772738666</image:loc>
      <image:title>migmatite gneiss - a gneiss that shows remelting, from India - display specimen</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/gypsum-sand-selenite-desertrose-from-a-dry-lake-in-chihuahua-mexico-unit-of-12-student-specimens</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/desertrosestsetof12.jpg?v=1765768361</image:loc>
      <image:title>gypsum - unaltered sand selenite (desert) rose from a dry lake in Chihuahua, Mexico - unit of 12 student specimens</image:title>
      <image:caption>gypsum - unaltered sand selenite (desert) rose from a dry lake in Chihuahua, Mexico - unit of 12 student specimens - Geological Specimen Supply</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/muscovite-mica-from-a-pegmatite-near-coronel-murta-minas-gerais-brazil-hand-display-specimen</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/muscoviteCoronelMurta_MinasGeraisH_D12.5kpcl_eb315447-dcf1-4b4f-ae84-c72a882d2648.jpg?v=1768725663</image:loc>
      <image:title>muscovite mica from a pegmatite near Coronel Murta, Minas Gerais, Brazil - hand/display specimen</image:title>
      <image:caption>muscovite mica from a pegmatite near Coronel Murta, Minas Gerais, Brazil - hand/display specimen - Geological Specimen Supply</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/sparry-magnesite-pinolith-display-specimen-of-a-very-unusual-metamorphic-rock-from-austria-copy</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/pinolithD30pcl4coins.jpg?v=1770629500</image:loc>
      <image:title>sparry magnesite - pinolith - display specimen of a very unusual metamorphic rock from Austria</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/sparry-magnesite-pinolith-hand-display-specimen-of-a-very-unusual-metamorphic-rock-from-austria</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/pinolithH_D20pcl_dd7a304c-9d11-4a50-9bfb-79b465c13e0d.jpg?v=1775287822</image:loc>
      <image:title>sparry magnesite - pinolith - hand/display specimen of a very unusual metamorphic rock from Austria</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/calcite-fluorescent-and-phosphorescent-calcite-cleavage-rhomb-from-the-challenger-cave-system-nuevo-leon-mexico</loc>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/calciteNLhotpinklwu_v.jpg?v=1770626146</image:loc>
      <image:title>calcite - hot pink fluorescent and phosphorescent calcite cleavage rhomb from the Challenger Cave system, Nuevo Leon, Mexico</image:title>
      <image:caption>calcite - fluorescent and phosphorescent calcite cleavage rhomb from the Challenger Cave system, Nuevo Leon, Mexico - Geological Specimen Supply</image:caption>
    </image:image>
  </url>
  <url>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/graywackegrayst.jpg?v=1770970256</image:loc>
      <image:title>graywacke -  teaching student specimens of a gray dirty sandstone - Unit of 5 specimens</image:title>
      <image:caption>graywacke -  teaching student specimens of a gray dirty sandstone - Unit of 5 specimens - Geological Specimen Supply</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/IMG_13682.jpg?v=1775203147</image:loc>
      <image:title>calcite - cool pink fluorescent and phosphorescent calcite cleavage rhomb from the Challenger Cave system, Nuevo Leon, Mexico</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/bituminouscoalSUFCOst.jpg?v=1772701547</image:loc>
      <image:title>bituminous coal close to anthracite  -  Sufco Mine, Sevier County, Utah - unit of 5 student specimens</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/solenastria-cf-bella-conrrad-1841-lower-pleistocene-scleractinian-coral-fossil-from-the-james-city-formation-lee-creekmine-aurora-nc</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/Solenastria20pcl2coins.jpg?v=1775293804</image:loc>
      <image:title>Solenastria cf bella (Conrad, 1841)    Lower Pleistocene scleractinian coral from the James City Formation, Lee Creek Mine, Aurora NC - hand/display specimen</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/solenastria-cf-bella-conrad-1841-lower-pleistocene-scleractinian-coral-from-the-james-city-formation-lee-creek-mine-aurora-nc-copy</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/Solenastria15pcl2coins_4a9c9a25-b841-4575-b908-18768868599c.jpg?v=1775294933</image:loc>
      <image:title>Solenastria cf bella (Conrad, 1841)    Lower Pleistocene scleractinian coral from the James City Formation, Lee Creek Mine, Aurora NC - hand specimen</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/nontronite-soft-white-kaolin-teaching-hand-specimen-of-the-primary-constituent-of-kaolin-clay-copy</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/nontroniteD20pcl.jpg?v=1775892478</image:loc>
      <image:title>nontronite - an iron-rich swelling clay in the smectite group from São José da Safira, Minas Gerais, Brazil - hand/display specimen</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/nontronite-an-iron-rich-swelling-clay-in-the-smectite-group-from-sao-jose-da-safira-minas-gerais-brazil-hand-specimen</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/nontroniteH12.5pcl2coins.jpg?v=1775893193</image:loc>
      <image:title>nontronite - an iron-rich swelling clay in the smectite group from São José da Safira, Minas Gerais, Brazil - hand specimen</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/gypsum-sand-selenite-rose-from-a-dry-lake-near-ica-ica-province-peru-hand-display-specimen-copy</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/sandselenitePeruH_D25pcl.jpg?v=1776318820</image:loc>
      <image:title>gypsum - sand selenite from a dry lake in the Atacama Desert, Ica Province, southern Peru - hand/display specimen</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/gypsum-sand-selenite-from-a-dry-lake-near-ica-ica-province-southern-peru-hand-specimen</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/sandselenitePeruH20pcl.jpg?v=1776319447</image:loc>
      <image:title>gypsum - sand selenite from a dry lake near Ica, Ica Province, southern Peru - hand specimen</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/gypsum-sand-selenite-from-a-dry-lake-near-ica-ica-province-southern-peru-display-specimen</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/sandselenitePeruD35pcl.jpg?v=1776319583</image:loc>
      <image:title>gypsum - sand selenite from a dry lake in the Atacama Desert, Ica Province, southern Peru - display specimen</image:title>
      <image:caption></image:caption>
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  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/dacite-large-hand-display-specimen-of-gray-porphyritic-dacite-a-rock-common-in-the-archean-continents-copy</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/dacitelgH_D12.5pcl.jpg?v=1776670835</image:loc>
      <image:title>dacite - large hand/display specimen of gray porphyritic dacite, a rock common in the Archean continents</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://geologicalspecimensupply.com/products/rhyolite-porphyry-light-pink-rhyolite-with-small-phenocrysts-large-hand-display-specimen</loc>
    <lastmod>2026-04-20T18:36:01-07:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0960/7650/files/rhyoliteporphyryLgH_D12.5pcl.jpg?v=1776673564</image:loc>
      <image:title>rhyolite porphyry - light pink rhyolite with small phenocrysts - large hand/display specimen</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
</urlset>
