文档介绍：山东沂南县铜井-龙头旺矿区金矿岩石学特征及开采评价
闵祥吉1,2,朱随洲1,2,储照波1,徐建1,刘伟栋1,周宇1,李新年1,金刚1,王志浩1,张龙1
,济南,250101
,北京,100083
提要:
山东沂南铜井-龙头旺铜金矿是矽卡岩型多金属矿床,位于华北板块东南缘沂沭断裂西侧,是中生代岩浆活动比较强烈的地区。文章通过对矿区各类岩浆岩的硅酸盐全分析得出杂岩体为典型的次火山岩,~,钙碱指数为54~,属钙碱性系列杂岩体;通过对杂岩体的多元素分析、组合分析、光谱半定量分析,并结合镜下分析,确定了主要矿物黑云母闪长岩、中斑石英闪长玢岩、细斑角闪石英闪长玢岩、花岗闪长斑岩的赋存状态;将以上矿石特征与前期开采过金场矿区矿石的矿物成分、结构构造、有益组分含量、金矿物赋存状态等进行对比,发现铜井-龙头旺铜金矿属于易选矿石,冶炼性能良好,据此可采用目前矿山正在运用的浮选-磁选-重选联合选矿方法。
关键词:铜井-龙头旺、金矿、岩石学特征、开采技术选择
Rock characteristics and mining technology of Shandong Yinan Tongjing - Longtouwang mining
Min Xiangji1,2, Zhu Suizhou1,2, Chu Zhaobo1, Xiu Jia1,Liu Weidong1, Zhou Yu1 ,Li Xinnian1, Jin Gang1,Wang Zhihao1, Zhang Long1
Geology & Exploration Institute of Shandong,Bureau of China Metallurgy and Geology,Jinan 250101, China
School of Earth Sciences and Resources,China University of Geosciences(Beijing), Beijing100083, China
Abstract:Shandong Yinan Tongjing -Longtouwang copper and gold mine is polymetallic skarn deposit, located in the southeastern margin of the North China Plate and the west side of Yishu fault,and is relatively strong Mesozoic magmatism areas. Through wide analysis of silicate of various types of magmatic rocks ,hetero rocks are typical subvolcanic, Rittman index of to , the calcium base index of 54 to ,so is a calc-alkaline plex ;With the multi-element analysis, portfolio analysis, spectral semi-quantitative analysis plex rock, combined with microscopic analysis ,we determine the occurrence state of the main mineral biotite diorite, the quartz diorite spot, thin spots hornblende diorite Britain porphyry, granodiorite porphyry; Compared the above features with the previous position, structure, content of ponents, gold and other mineral occurrence status of mined Jinchang mining field,we find Tongjing - Longtouwang is easy to beneficiate , with good metallurgical performance, thus now mine is suitable using the flotation - ic separation - re-election u