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山东枣庄含磷偏碱性杂岩体,位于鲁西台背斜西南缘鲁中隆起与郯城-徐州坳断带接触部位,侵入于泰山群片麻岩中。岩体平面呈环状小岩株,面积4km~2。杂岩体侵入可分三期,第一期主要为黑云母辉石岩类,分布在岩体中部;第二期为正长辉长岩类,分布在岩体外环;第三期多为正长岩脉,并穿插前二期岩石。杂岩体的含矿岩石为黑云母辉石岩,其矿物组合主要为次透辉石、黑云母、磷灰石,有少量及微量磁铁矿、钛铁矿、正长石、榍石等。蚀变矿物为绿泥石、角闪石、绿帘石等。本主文要讨论与磷矿化有关的第一期岩石内几种主要矿物的矿物学、矿物化学与成磷的关系。
The Zaozhuang phosphorous-containing alkaline complex in Shandong Province is located in the contact part between the Luzhong uplift and the Tancheng-Xuzhou depression belt in the southwestern margin of the Luxi station anticline and intrudes into the Taishan gneiss. The plane of the rock mass is small annular rock with an area of 4km ~ 2. Complex intrusions can be divided into three phases, the first phase is mainly biotite pyroxene, located in the central rock; the second period is Zhengchang gabbro, located in the rock outer ring; the third phase mostly Is the dacite veins, and interspersed the first two phases of rock. The ore-bearing rocks in complex bodies are biotite pyroxenites. The mineral assemblages are mainly of diopside, biotite and apatite, with minor and trace magnetite, ilmenite, orthoclase and limonite . Alteration minerals are chlorites, hornblend, emerald stone and so on. This paper discusses the relationship between mineralogy, mineral chemistry and phosphorus formation of several major minerals in the first phase of rock related to phosphate mineralization.