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This sample of eosphorite is displayed in the Smithsonian Museum of Natural History. Eosphorite is a phosphate mineral with the composition (Mn,Fe)AlPO4(OH)2.2H2O. The sample at left is about 30 cm across and is from Black Mountain, Rumford, Maine.
这种欧磷石样品陈列在史密森尼自然历史博物馆中。欧磷石是一种含磷酸盐的矿物,其化学式为(Mn,Fe)AlPO₄(OH)₂·2H₂O。左侧的样品宽约30厘米,来自缅因州拉姆福德的黑山。
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