9iddb.nr ((COLEMANITE)), $20 MINIMUM BID, Boron Open Pit Mine, Kramer Borate Deposit, Kern County, California, 8 x 4 x 3.5 cm, Cabinet | |
Here is a large single crystal of Colemanite, 8 cm in length, with other smaller Colemanite crystals on the side of the main crystal. ex Jim Minette collection |