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These samples of creedite are displayed in the Smithsonian Museum of Natural History. Creedite is a sulfate mineral that contains fluorine with the composition Ca3Al2SO4(OH)2F8.2H2O. The sample at left is about 18 cm across and is from Santa Eulalia, Chihuahua, Mexico.
这些 creedite 样品陈列在史密森尼自然历史博物馆中。creedite 是一种含氟的硫酸盐矿物,其化学式为 Ca₃Al₂SO₄(OH)₂F₈·2H₂O。左侧的样品直径约为 18 厘米,采自墨西哥奇瓦瓦州的圣胡安·德·埃尔·阿拉哈拉。
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