青海省东昆仑西段尕林格铁多金属矿床特征及成因

尕林格铁多金属矿床是位于青海省东昆仑西段祁漫塔格断褶带内典型的铁矿床，其成矿作用主要受特定层位地层、同生同质角砾岩和火山岩一次火山岩控制，矿体主要分布在O．St^a-2和O．St^a-4大理岩岩性段中，与矿化关系密切的围岩蚀变主要是矽卡岩化和蛇纹石化。矿石矿物主要为磁铁矿，其次为赤铁矿和菱铁矿。成因类型属于火山喷气沉积一叠加改造型矿床。

Characteristics and genesis of the Galinge polymetallic Fe deposit in west segment of East Kunlun Moutain, Qinghai province

The Galinge Polymetallic Fe deposit is located at the Qimantage chasmic trough in the East Kunlun orogenic belt, Qinghai province. The defined stratum sequence, syngenetic breccia of the horizons, and volcanic and subvolcanic rocks in the area are the major factors controlling formation of the deposit. The Ore bodies of the deposit are mainly distributed in the O-St^a2and O-S^ta- 4 lithological segment of marble. The major wall-rock alterations closely associated with mineralization include skarnization and serpentinization. The ore minerals are mainly magnetite, and secondly hematite and siderite. The Galinge polymetallic Fe deposit might be formed by volcanic exhalation and sedimentation as a reformed and superimposed deposit.