622 ts ((CALCITE with COLEMANITE)), $10 MINIMUM BID, Boron Open Pit Mine, Kramer Borate Deposit, Boron, Kern County, California, 4 x 4 x 2.5 cm, Miniature, | |
Here is a undamaged specimen of golden Calcite with several sharp crystals of colorless Colemanite protruding from the Calcite. ex Milton L Speckels with label, ex Jim Minette collection. |