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limestone - student specimens of a tan to gray silty limestone from the Jurassic Carmel Formation of Utah - Unit of 5 specimens
$ 4.20
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limestone - yellowish dolomitic limestone from the Lower Permian Kaibab Formation - teaching hand specimen
$ 9.50
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magnesite - white vitreous nodular magnesite - large hand/display specimen
$ 12.50
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magnesite - white vitreous nodular magnesite - set of nodules
$ 9.50
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marble - student specimens of white large-crystal marble - Unit of 10 smaller specimens
$ 5.80
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obsidian - black obsidian - Montgomery Pass, Nevada - hand specimen
$ 9.50
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oil well core section that has been plugged and cut in half - an unusual example
$ 12.50
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peat - peat from the San Andreas fault zone, formed in a marsh that dried out roughly a century ago - large hand/display specimen
$ 15.00
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