CaB3O4(OH)3.H2O
CaB₃O₄(OH)₃·H₂O
This sample of colemanite is displayed in the Smithsonian Museum of Natural History. Colemanite is an oxide of calcium and boron with the composition CaB3O4(OH)3.H2O. The sample at left is about 18 cm across and is from Lower Biddy McCarthy mine, Ryan, California. The accompanying colemanite gem is 14.9 carats and is from Death Valley, Inyo County, California.
这个科利曼石样本陈列在史密森尼自然历史博物馆中。科利曼石是一种钙和硼的氧化物,化学式为CaB₃O₄(OH)₃·H₂O。左下方的样本宽约18厘米,来自加利福尼亚州瑞安市的Lower Biddy McCarthy矿。 accompanying的科利曼石宝石重14.9克拉,来自加利福尼亚州因约县的死亡谷。
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