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arkose - teaching hand specimen of medium-grained gray-white arkosic sandstone from the Walker Formation of California
$ 7.50
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asphalt - teaching hand/display specimen of natural asphalt from seeps on Sulphur Mountain, CA
$ 9.50
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asymmetrical ripple marks in siltstone from the Moenkopi Formation - teaching hand specimen
$ 7.50
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barite rose - teaching set of barite roses from the Garber Sandstone near Noble, Oklahoma
$ 7.50
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bituminous coal - teaching hand specimen of a high grade bituminous coal from the King II Mine, Hesperus, Colorado
$ 7.50
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bituminous coal close to anthracite - Salina Canyon, Utah - student specimens UNIT OF 5 SPECIMENS
$ 4.20
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caliche - teaching hand/display specimen of pink nodular caliche from the Texas panhandle
$ 7.50
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chert - banded chert from the Monterey Formation, California - teaching hand specimen
$ 9.50
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colemanite - hydrous calcium borate from the Terry borate deposit, Inyo County, California - teaching hand specimen
$ 9.50
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conglomerate - display specimen of the Shinarump Conglomerate, Triassic, Hurricane Mesa, Utah
$ 22.50
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