15dm675 ((GOETHITE coated CALCITE, CHALCOPYRITE)), $10 MINIMUM BID, Durango, Mexico, 6 x 4.5 x 3 cm, Miniature | |
Black hemispheres of Goethite and a thin Goethite coating on scalenohedral Calcite crystals with Chalcopyrite crystals with some greenish coating. ex Dennis McMurdie collection. |