622 ts ((COLEMANITE with CALCITE)), $10 MINIMUM BID, Boron Open Pit Mine, Kramer Borate Deposit, Boron, Kern County, California, 6 x 4.5 x 2.5 cm, Miniature, | |
Here is a undamaged specimen of Colemanite colored light brown by and coated with Calcite. ex Jim Minette collection |