| 574-475-09fdceis ((PYRITE)), $15 MINIMUM BID, Cerro de Pasco, Peru, 11 x 9 x 3 cm, Cabinet, | |
 | A Philadelphia Academy specimen of undamaged octahedral crystals of Pyrite. Also on the backside and minor on the front appears to be Tennantite/Tetrahedrite, non crystalline. These also cause the Pyrite to have a blackish coating. I did scrub a little and it did clean up a little. I doubt it will clean up totally. ex Academy of Natural Sciences of Philadelphia #19723. |
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