| Ca6Al2(SO4)2B(OH)4(OH,O)12.26H2O
Ca₆Al₂(SO₄)₂B(OH)₄(OH,O)₁₂·26H₂O
This sample of charlesite is displayed in the Smithsonian Museum of Natural History. Charlesite is a sulfate mineral that contains calcium, aluminum and boron with the composition Ca6Al2(SO4)2B(OH)4(OH,O)12.26H2O. The sample at left is about 3 cm across and is from the Kalahari manganese field, Cape Province, South Africa.
这种查尔斯石样品陈列在史密森尼自然历史博物馆中。查尔斯石是一种含钙、铝和硼的硫酸盐矿物,其化学式为Ca₆Al₂(SO₄)₂B(OH)₄(OH,O)₁₂·26H₂O。左图中的样品宽约3厘米,采自南非开普省的卡鲁锰矿田。
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