河南固始地区矽卡岩型铅锌矿地质特征与成因

河南固始地区矽卡岩型铅锌矿为小型层控矽卡岩型铅锌矿，矿体赋存于下石炭统花园墙组地层中，主要受地层控制，区内龟（山）—梅（山）断裂带、杨山背斜及北西西向断裂为主要控矿构造。燕山期中酸性小岩体在有利的构造部位多次侵入，与围岩下石炭统花园墙组的石英砂岩、钙硅质石英砂岩、钙硅质粉砂岩的“硅钙面”发生交代作用，从而富集成矿，燕山期中酸性小岩体是矿区主要的物质来源和热源，矿体形成受构造影响显著，矿体规模与构造附近的侵入体规模成正比。矿区内物化探对矿体均有良好的指示。研究成果对于该区进一步扩大找矿远景具有一定的借鉴意义。

Geological characteristics and genesis of the skarn lead-zinc deposit in Gushi County, Henan Province

The skarn type Pb-Zn deposit in the Gushi area of Henan Province is a small stratabound skarn Pb-Zn deposit. The ore bodies occur in the Lower Carboniferous Huayuanqiang Formation, and are mainly controlled by strata. The Guishan-Meishan fault zone, Yangshan anticline and NW-W-trending faults are the main ore-controlling structures. The Yanshanian small intermediate-acidic rock mass repeatedly intruded into favorable tectonic position, and underwent metasomatism with the surrounding Lower Carboniferous Huayuanqiang Formation quartz sandstone, calcium-siliceous quartz sandstone and calcium-siliceous siltstone, resulting in element enrichment and mineralization. The Yanshanian small intermediate-acidic rock mass is the main material source and heat source in the mining area. The ore bodies are significantly affected by the structure, and the size of the ore bodies is proportional to the size of intrusions near the structure. The physicochemical exploration in the mining area has a good indication to the ore bodies. The research results can be used as a reference to further expand the ore-searching prospect in this area.