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矿床地质  2002 

大井锡多金属矿床矿石矿物成分及时空演化

Keywords: 内蒙古,大井矿床,矿石类型,矿石矿物,矿物成分,时空演化

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Abstract:

文章总结和划分了矿床的矿石类型、矿化阶段及其在空间上的分布;对不同阶段、不同地段和不同类型的黄铁矿类、毒砂、黄铜矿、闪锌矿、方铅矿和锡石等6种主要矿石矿物进行了电子探针微区分析。结果显示,矿床中主要矿石矿物的化学成分明显受时间因素控制,尤其是黄铁矿类和锡石。毒砂!闪锌矿、黄铜矿和方铅矿等硫化物,更具空间上的分带性,总体上,老区东部-北区南部的矿物成分特征显示出其形成温度较高,可能是本区的重要矿化中心,而南区和西区可能还存在其他的矿化中心。

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