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anthracite - metamorphic "hard coal" from eastern Pennsylvania - unit of 5 student specimens
$ 4.20
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gneiss - large hand/display specimen of a Proterozoic granite gneiss from California
$ 15.00
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gneiss - Proterozoic granitic gneiss from the San Gabriel Mountains, California - hand specimen
$ 9.50
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orthogneiss - mid to late Proterozoic, St. Jerome, Quebec - unit of 5 student specimens
$ 5.50
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