7iddbis ((CALCITE on COLEMANITE)), $10 MINIMUM BID, Boron Open Pit Mine, Boron, Kern County, California, 9 x 5.5 x 5.5 cm, Cabinet, | |
![]() | Here are yellow opaque rhombs of Calcite on spear shaped colorless Colemanite crystals. Calcite fluoresces yellow. ex Jim Minette collection. |
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