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贵州瓮福磷矿为震旦系上统陡山沱组浅海相沉积的磷块岩。该矿区英坪矿段磷块岩平均含碘40ppm以上,已具工业开采品位。关于含碘磷块岩及磷灰石国内外报道很少,对此进行深入研究不仅为碘的综合利用提供评价依据,而且具重要的矿物学意义。同时,有助于我们更进一步了解磷块岩的成因。 1.含碘磷块岩的化学成分 英坪矿段富碘磷块岩多为单一磷酸盐型,呈致密状、砂屑状,豆状构造。磷灰石占85—95％以上,含少量石英、绢云母、绿泥石、黄铁矿和锆石等。
Wengfu Phosphate Mine in Guizhou is a shallow marine sedimentary phosphorite from the Sinian Doushantuo Formation. The Pingdingshan ore block phosphate rock contains iodine 40ppm above average, with industrial mining grade. There are few reports on iodine-bearing phosphatic rock and apatite. In-depth studies not only provide the basis for the comprehensive utilization of iodine, but also have important mineralogical significance. At the same time, it helps us to understand the genesis of phosphogypsum. 1. The chemical composition of iodine-bearing phosphate rock Ying Ping section of iodine-rich phosphate rock mostly single phosphate type, was dense, sand-like, bean-shaped structure. Apatite accounts for more than 85-95%, with a small amount of quartz, sericite, chlorite, pyrite and zircon.