摘要
荒沟山式金矿产出于辽吉古元古代裂谷增生地体内，容矿岩石为古元古代老岭群珍珠门组富镁碳酸盐建造，其变质程度为低角闪岩相－高绿片岩相。矿石中金的赋存状态以显微不可见金为主，主要载金矿物黄铁矿和毒砂颗粒细小，为００ｎ～１ｍｍ。围岩蚀变以硅化、绢云母化、含铁白云石化为特征。与金矿成矿密切的石英的均一温度为２０５～２３０℃，爆裂温度为２６０～３９０℃，矿床地质特征、地球化学特征研究表明该矿床为热水沉积叠加改造型金矿床。
The HuangGou Shan typed gold deposit occurred in rift multiplicative land mass in early proterozoic era.The orebearing rocks belong to magnesiumrich carbonate formation of pearl phylum,Laoling group of early proterozoic era.Its metamorphism is to the extent of low hornblendite facies-high greenschist facies.The main gold in ores are microinvisible.The principal goldcarrying minerals are finegrained pyrite and arsenical pyrite of 0.0n1mm.The country rocks are characterized by siliconization,muscovitization and ironbearing dolomitization.The homogenization temperature and cracking temperature of quartz which has colse relation with gold mineralization are 205230 and 260390 respectively.It shows from geological and geochemical researches that the gold deposit if hotwater deposition and superimposed reformation ore deposit.
出处
《黄金》
CAS
北大核心
1999年第6期1-4,共4页
Gold
关键词
热水沉积
叠加改造
金矿床
矿床成因
地质特征
hotwater deposition
superimposed reformation
gold ore deposit
HuangGouShan of Jilin
