摘要
东安浅成低温热液型金矿床位于黑龙江省逊克县北,赋存于中酸性火山—侵入岩、晚印支期碱长花岗岩和中燕山晚期细粒碱长花岗岩脉强硅化蚀变带中。矿石为强硅化贫硫化物金—银矿石。矿体矿石矿物成份简单,金属矿物含量低,总量只占2.8%,金属矿物主要为黄铁矿,少量的毒砂、闪锌矿、方铅矿等。脉石矿物主要为石英,少量的长石、高岭土、绿泥石、绢云母等。金矿物主要为银金矿,以粒间金为主,裂隙金次之,包裹金少量,粒度为中—微细粒为主。
Ore of the Dongan gold deposit is electrum ore that is strong silicification and poor sulphur, its mineral composition is simple. Being low content, metallic mineral pyrite accounts for 2. 8%. The main metallic mineral is pyrite, minority is arsenopyrite, sphalerite, galena etc.. Quartz is Main gangue mineral, next is feldspar, kaolinite, chlorite, sericite, etc.. Most of gold mineral occurrence as intergranular gold, others are inclusions. The size of gold is mid and fine micrinite （ 84.6% gold is fine micrinite） predominantly.
出处
《黄金科学技术》
2005年第5期19-22,共4页
Gold Science and Technology
