青海省都兰县哈日却录铜矿地质特征及找矿前景

Geological Characteristics and Prospecting Potentiality of Hariquelu Copper Deposit in Dulan County of Qinghai Province

哈日却录铜矿区位于东昆仑南缘布青山构造混杂岩带,NWW向断裂构造发育,岩浆活动频繁,岩浆热液为成矿元素的活化、迁移、富集创造了条件。研究区划分出2个矿段8条铜矿体,其中Ⅰ-2号矿体是区内主要矿体,赋矿岩石为碎裂状玄武岩、粉砂岩,矿体呈似层状,铜含量0.21%~2.22%,平均品位0.84%,主要有黄铜矿化、黄铁矿化、孔雀石化,铜矿体主要赋存于马尔争组玄武岩夹薄层砂岩中,认为是下步找矿的主攻层位。

Hariquelu copper deposit is located in Buqingshan tectonic melange belt in the southern margin of eastern Kunlun mountains.Faults with the trend of NWW developed well,and magmatic activities are frequent.Magmatic hydrothermal fluid creates conditions for the activation,migration and enrichment of ore-forming elements.The study area is divided into two ore sections and eight copper orebodies.Among them,Ⅰ-2 orebody is the main orebody in the area.The ore-bearing rocks are fragmentationed basalt and siltstone.The ore bodies occur as stratoid,the copper content is 0.21%~2.22%,and average grade is 0.84%.It mainly includes brass mineralization,yellow iron mineralization,and peacock petrochemicals.Copper orebodies mainly occur in thin sandstone intercalated with basalt of Ma'erzheng formation.It is considered as the main exploration layers in the future.