磷矿石多产于沉积岩，也有产于变质岩和火成岩，除个别情况外，矿物中的磷总是以正磷酸盐形态存在，磷的主要矿物为磷灰石。磷是重要的化工原料，也是农作物生长的必要元素，工业用磷必须大量从磷矿中提取，用于制造黄磷、赤磷、磷酸、磷肥、磷酸盐。英文名为PHOSPHATE ROCK 。分子式:3Ca3(PO4)2·CaR2。
白磷: 分子是由四个磷原子构成的正四面体.键角60°. 白色蜡状, 因常带有黄色, 有叫黄磷. 难溶于水,易溶于非极性溶剂如CS2，有剧毒(0.01g―0.06g致命)，着火点40℃ 所以少量的白磷保存在冷水;
红磷: 复杂的大分子, 结构尚未完全清楚, 但已知其结构中有磷原子构成的环和链，棕红色粉末，基本无毒，常压下加热则升华为磷蒸汽, 遇冷凝结为白磷，难溶于水和二硫化碳等;
黑磷: 黑色有金属光泽的晶体, 它是用白磷在很高压强和较高温度下转化而成的磷, 使用价值不大。
WONDERFUL Post.thanks for share..extra wait .. ?
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