湖南省临武县长冲矿区底砾岩型锡矿床地质特征及控矿因素浅析

Geological characteristics and ore controlling factors of the conglomerate tin deposit in the Chang Chong mining area,Linwu County,Hunan

临武县长冲矿区已查明底砾岩型锡矿床,该矿体赋存在跳马涧组砂岩底部与寒武系呈角度不整合接触面上的蚀变底砾岩中,呈面状展布,分布范围广,层位、厚度较稳定,底砾岩厚度0.6m～5.89m。矿体明显受地层、构造和岩浆岩控制,强蚀变的底砾岩层、侵入岩和断裂是锡矿富集的有利条件。

The breccia type tin deposit in the Chang Chong mining area in Linwu county has been located in the altered bottom conglomerate on the unconformable contact surface of the vauli Jianjian group and the Cambrian unconformable contact surface,with a wide range of distribution,stable layer and thickness,and the thickness of the breccia from 0.6 to 5.89m.Ore bodies are obviously controlled by strata,structures and magmatic rocks.Strong altered bottom gravel,intrusive rocks and faults are favorable conditions for tin ore enrichment.