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aragonite - "cave calcite" from the Potosi Mine, Santa Eulalia, Chihuahua - hand specimen
$ 10.50
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biotite mica - teaching student specimens collected from a pegmatite at Cardiff, Ontario - Unit of 5 specimens
$ 5.50
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chert - banded chert from the Monterey Formation, California - hand/display specimen
$ 12.50
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fluorite - student specimens of a mineral often associated with metallic ores - massive fluorite - Unit of 5 specimens
$ 12.50
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magnesite - white vitreous magnesite - teaching hand/display specimen
$ 9.50
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