江西上饶蔡家坪铅锌矿床围岩蚀变及矿化特征

江西上饶蔡家坪铅锌矿床围岩蚀变及矿化特征江西上饶蔡家坪铅锌矿床围岩蚀变及矿化特征 摘要：江西上饶蔡家坪铅锌矿床是一个近年来新发现的铅锌矿床，矿床产出于中侏罗世漳平组地层中，矿脉主要赋从于具磨拉石建造的杂砂岩和球粒流纹岩的界面及裂隙附近。围岩蚀变类型有绿泥石化、硅化、高岭土化、碳酸盐化等，绿泥石化和硅化与矿化关系密切。每个含矿层位附近杂砂岩的碎屑粒度都有自下而上逐渐变粗的趋势，具磨拉石建造的特点。矿床类型为中低温热液金属硫化物矿床。在上述基础上，给出了进一步找矿的方向。 关键词： 围岩蚀变；矿物特征；蔡家坪铅锌矿床；江西上饶 Abstract: the jiangxi shangrao CaiGuPing pb-zn deposit is a newly discovered pb-zn deposit, deposit output in Jurassic zhangping formation, mainly from a vein fu in grinding ShiJianZao pull the miscellaneous sandstone and flow lines of chondrules rock interface and fractures nearby. Wall-rock alteration types have LuNi petrochemical, chloride, kaolin change, carbonic acid salinization, LuNi petrochemical and chloride and mineralization close relationship. Each ore-bearing horizon noise of debris near the sandstone size has gradually become the trend of coarse bottom-up, with the characteristics of the grinding ShiJianZao pull. The copper deposit types for low temperature) metal sulfide ore deposits. In the above was given based on the direction of further prospecting. Keywords: wall-rock alteration; Mineral features; CaiGuPing pb-zn deposit; Jiangxi shangrao 中图分类号：P614 文献标识码：A 文章编号： 菜家坪铅锌矿床位于赣东北境内，赣东北地区是我国铜-铅-锌矿资源的重要产地之一，解剖菜家坪矿床有助于深化对区域矿床的成因认识和同类矿床的勘查找矿工作。对该区大型矿床（德兴铜矿、冷水坑铅-锌-银矿等）的成因认识已有较成熟的观点，但多数中小型矿床的成因认识还存在较多争议，如对菜家坪铅锌矿床的成因认识就有‘斑岩型’、‘构造蚀变岩型’及‘爆破角砾岩型’等观点。文章从围岩蚀变及矿化特征、矿物特征等方面对该矿床进行了讨论，从微观和宏观相结合的角...