- Small Cabinet, 8.9 x 5.5 x 5.2 cm
- Death Valley, Inyo Co., California, USA
Superb luster distinguished this fine cluster of sharp colemanite crystals from the evaporite deposits at Death Valley. The large crystal measures about 4 cm x 3 cm. Colemanite is a secondary mineral that forms by alteration of borax and ulexite. These crystals are really shiny and sharp.