安徽南陵县吕山金矿地质特征初步研究

A preliminary study on the geological characteristics of Lushan Gold deposit in Nanling County anhui Province

安徽南陵县吕山金矿位于北贡背斜北东转折端。矿体主要分布在三个呈北东向展布的矿化带中,空间赋存位置一是不整合面附近;二是与花岗闪长斑岩有关的构造角砾岩中;三是奥陶系灰岩中的构造破碎带中;矿体为似层状、透镜状,矿石类型主要有泥化褐铁矿化硅化角砾岩型和绢英岩化硅化花岗闪长斑岩型,赋矿围岩为角砾岩、花岗斑岩和石灰岩,矿石成分单一,属低砷易选氧化金矿。

The Lushan gold deposit in Nanling County,Anhui province is located at the north-eastern turning end of the Beigong anticline.The ore bodies are mainly distributed in three nNE trending mineralization belts.The other is the tectonic breccia related to granodiorite porphyry.The third is in the tectonic fracture zone of ordovician limestone.The ore body is lamellar lenticular,and the ore types mainly include argillated limonite silicified breccia and sericite silicified granite diorite porphyry,and the host rock is breccia granite porphyry and limestone.The ore composition is single and belongs to gold ore with low arsenic and easy separation and oxidation.