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kernite - hydrated sodium borate, an uncommon borate mineral
$ 7.50
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limonite - teaching hand specimen of limonite from the Whiteside mine
$ 7.50
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magnesite - white vitreous magnesite - teaching hand specimen
$ 7.50
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magnetite - teaching student specimens of this important iron ore - unit of 10 smaller specimens
$ 5.80
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quartz - teaching student specimens of milky quartz, very slightly gray from natural radiation - UNIT OF 5 SPECIMENS
$ 4.20
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sulfur - teaching student specimens of massive sulfur UNIT OF 10 smaller SPECIMENS
$ 5.80
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sulfur - student specimens of massive sulfur - Unit of 5 specimens
$ 4.20
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talc - clinochlore soapstone - a dark green talcose mineral - teaching student specimens - UNIT OF 5 SPECIMENS
$ 4.20
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