浅析湖南省花垣县大脑坡铅锌矿地质特征、成矿规律及矿床成因

An Analysis of the Geological Characteristics,Metallogenic Laws,and Genesis of the Naobao Slope Lead Zinc Mine in Huayuan County,Hunan Province

大脑坡矿区处于花垣铅锌矿田北东段中部位置,为成矿核心区。大脑坡铅锌矿矿体赋存于寒武系下统清虚洞组中,容矿岩性为厚-巨厚层藻礁灰岩,铅锌矿主要容于藻礁灰岩的藻孔中。矿区褶皱构造简单,断裂多,岩浆岩不发育。14个矿层中共圈定出矿113个,其中大型规模矿体3个,中型规模矿体7个,小型规模矿体103个。矿体呈似层状、大透镜状,局部见囊状。本文通过分析矿区地层、岩性、构造等控矿因素,进一步探讨矿区成矿规律及矿床成因。

The Naohuapo mining area is located in the central part of the northeast section of the Huayuan lead-zinc ore field,and is the core area for mineralization.The Naobao Slope lead-zinc ore body is located in the Qingxu Cave Formation of the Lower Cambrian,and the host rock is thick to extremely thick layers of algal reef limestone.The lead-zinc ore is mainly hosted in the algal pores of the algal reef limestone.The fold structure in the mining area is simple,with many faults and underdeveloped magmatic rocks.A total of 113 ore deposits have been delineated from 14 ore layers,including 3 large scale ore bodies,7 medium scale ore bodies,and 103 small scale ore bodies.The ore body is layered and large lens shaped,with locally seen cystic shapes.This article further explores the ore-forming laws and genesis of ore deposits in mining areas by analyzing the geological,lithological,and structural factors that control ore deposits.