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马沙努尔铜矿化赋存于切割克洛斯佩特花岗岩套(2,400～2,000m.y.)粉红色斑状花岗岩的断裂和角砾岩带(剪切带)中。矿化属断裂控制的后生热液裂隙充填类型,伴生的围岩蚀变为绿泥石化、钠黝帘石化、绢云母化和硅化。矿石矿物主要是黄铜矿和黄铁矿,其次有斑铜矿、辉铜矿、铜蓝、蓝辉铜矿和硫钴矿,偶见有极少的自然铜。赤铁矿(镜铁矿)和磁铁矿通常与矿化密切伴生。推断有三个矿化阶段,其中第二阶段以黄铁矿沉淀为主。共生序列研究表明,在开始阶段流体是高fO_2环境,其后在主要的铜沉淀阶段Cu/Fe比值逐步增加,成为高fS_2环境。
The Marshur copper mineralization occurs in the fault and breccia zone (shear band) of the cut pinkish granite (2,400-2,000m.y.) Cut from the Pinkstone Granite Set. Mineralization is controlled by the type of fracture after the hydrothermal fissure filling, associated wall rock alteration chlorite, sodium zoisite, sericitization and silicification. Ore minerals are mainly chalcopyrite and pyrite, followed by a spot copper, chalcopyrite, copper blue, blue chalcopyrite and cobalt and cobalt, and occasionally have very little natural copper. Hematite (specular) and magnetite are usually closely associated with mineralization. It is inferred that there are three stages of mineralization, of which the second stage is mainly pyrite precipitation. The study of symbiotic sequence shows that the fluid is high fO_2 in the initial stage, then the Cu / Fe ratio gradually increases and becomes a high fS_2 in the main copper deposition stage.