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按照矿物、岩相特徵,通常将磷酸盐矿床区分为岩浆型的磷灰石矿床,以及沉积型磷块岩矿床两个基本类型。对于后者,可进一步分为沉积变质型及沉积型两种类型。磷块岩中,磷酸盐矿物成份上接近于氟磷灰石: Cα_(10)(PO_4)_6F_2但几乎不形成良好结晶。和纯磷灰石相比,前者晶格中部份PO_4~(---)常被CO_3~(--)、SO_4~(--)、OH~-类质同象交代。
According to the characteristics of minerals and lithofacies, the phosphate deposits are generally divided into magmatic apatite deposits and sedimentary phosphate rock deposits two basic types. For the latter, can be further divided into sedimentary metamorphic and sedimentary two types. Phosphorite, the phosphate mineral composition close to fluorapatite: Cα_ (10) (PO_4) _6F_2 but does not form a good crystal. Compared with pure apatite, part of PO_4 ~ (---) in the former crystal lattice is often replaced by the isomers of CO_3 ~ (-), SO_4 ~ (-) and OH ~ -.