11iddbnl ((TINCALCONITE pseudomorph after BORAX)), $10 MINIMUM BID, Boron Open Pit Mine, Boron, Kerns County, California, 5 x 2 x 2 cm, Miniature, | |
Large single crystal of Borax now pseudomorphed to Tincalconite. Borax is unstable and looses water forming Tincalconite. ex Jim and Dawn Minette collection. |