| 5405 11atdb.ts ((TETRAHEDRITE, CHALCOPYRITE)), $10 MINIMUM BID, San Martin Mine, San Martin, Zacatecas, Mexico, 7.5 x 3 x 2 cm, Large Cabinet | |
 | Tetrahedrite and Chalcopyrite from San Martin Mine. Chalcopyrite crystals have a nearly black iridescent patina. Tetrahedrite are also dark. Photo taken at a slow speed to show the detail. |
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