| 98hhsh.in ((CALCITE with BIRNESSITE)) $20 MINIMUM BID, Gold Hill Mine, Tooele County, Utah, 6.5 x 5.5 x 2.5 cm, Miniature | |
_small.jpg) | One side has knobby stalactite like rounded Calcite covered with black Birnessite on the surface. Other side shows the white Calcite with cores of black Birnessite. This is an excellent example with the outside edge of the Calcite missing showing the long black cores of exposed Birnessite. They are not powdery and stay intact |
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