exclusiveminerals2:
Colemanite, Billie Mine, Inyo County, California, United States; 7.5 cm across
exclusiveminerals2:
Colemanite, Extension 23, Baker Connection Fault, Boron Open Pit, Boron, Kern County, California, United States; Ex James and Dawn Minette Mineral Collection; 7 cm across
exclusiveminerals2:
Colemanite, Kirka, Eskisehir, Turkey; 8 cm across