沐浴河铅锌矿床地质特征及成因

Geological Characteristics and Genesis of Muyu River Lead-zinc Deposit

沐浴河铅锌矿位于湖北省神农架断穹东部梨花坪复背斜北翼。矿体赋存于早震旦世陡山沱组第四岩性段第二岩性层的角砾状铅锌矿化白云岩中,呈层状单斜产出,形成两个矿化带及三个矿体,矿体厚度较稳定,矿体铅、锌矿品位与矿体厚度呈正相关关系,矿体围岩以碳质页岩和矿化白云岩为主,围岩蚀变有黄铁矿化、褐铁矿化等。属层控—改造型铅锌矿床。

Muyu River lead-zinc deposit is located in north wing of Lihuaping anticlinorium of eastern Shennonjia fracture dome in Hubei province. The ore body occurs in the brecciated lead-zinc dolomite of the second lithologic bed of the fourth lithologic member in the Doushantuo Fm, Early Sinian Epoch, and occurrences in monoclinic beds. As a result, the two mineralized zones and three ore bodies are formed. The ore body thickness is more stable. The grade of lead and zinc and the thickness of the ore body are positively correlated. The wall rock of ore body mainly concludes carbonaceous shale and mineralization dolomite. There are pyritization and ]imonition of rock alteration. It is a reformed lead-zinc stratabound ore deposit.