20hhgd.is ((CHALCOPYRITE, CALCITE)) $25 MINIMUM BID, Baia Sprie Mine, Baia Sprie, Romania, 7 x 6.5 x 2 cm, Cabinet | |
Undamaged specimen with two generations of Calcite with a white and a yellow color. Large blackish or dark crystals are actually Chalcopyrite crystals with a coating or oxidation. ex Glenn Davidson collection. ex Thames Valley Minerals specimen |