622 ts ((COLEMANITE on CALCITE)), $15 MINIMUM BID, Boron Open Pit Mine, Kramer Borate Deposit, Boron, Kern County, California, 5.5 x 4 x 1.5 cm, Miniature | |
Here is a specimen with yellow Calcite matrix and undamaged gemmy sharp Colemanite crystals. ex Jim Minette collection. |