摘要
浅成低温水热酸性硫酸盐型和冰长石绢云母型金矿床形成于陆相火山岩活动区地热系统内，成矿流体以大气水为主，成矿温度小于３００℃，压力小于ｎ×１０ＭＰａ。酸性硫酸盐型金矿床以出现硫砷铜矿＋黄铁矿±铜蓝±自然铜和明矾石、高岭石等高级泥岩化蚀变为特征；冰长石绢云母型矿床以出现冰长石±绢云母和绢云母化、硅化蚀变为特征。酸性硫酸盐型矿床形成于酸性（ｐＨ＜４）相对氧化的流体环境，冰长石绢云母型矿床形成于近中性（ｐＨ＞６）相对还原的流体环境。
Epithermal acid sulfate type and adularia
sericite type gold deposits are formed in geothermal systems of continental volcano activity
region at temperature less than 300℃ and pressures less than a few hundreds and ore
forming fluid are predominantly meteoric fluids.Acid sulfate type deposits are characterized by
the appearance of enargite+pyrite±covellite± sulfate and advanced argillic alteration
assemblage of alunite,kaolinite etc,adularia seicite and silicification.acid sulfate type
deposits are formed in acid(PH<4.0) and relatively oxidized fluids environment,adularia
sericite type deposits are formed near neutral (PH>6) and relatively reduced fluids environment
出处
《新疆地质》
CAS
CSCD
1999年第2期57-61,共5页
Xinjiang Geology
