摘要
哈西金矿床位于新疆托里县哈图山南麓,矿体赋存在石炭系基性火山岩-火山碎屑岩中,受安齐断裂的控制作用非常明显,安齐断裂既是导矿构造、又是容矿构造。矿石类型主要有黄铁矿化玄武岩型、黄铁矿化凝灰岩型、黄铁矿化碎裂角砾状凝灰岩型。矿石中黄铁矿的3δ4S值为+0.83‰^+1.48‰,石英气液包裹体水的δDV-SMOW值为-101‰^-118‰,1δ8O水值为11.31‰~11.71‰;成矿温度为230~280℃,成矿时代为早石炭世。成矿热液不是岩浆热液,而是受到了古大气水混入的火山晚期热液,并且随着热液的演化古大气水混入程度加强,属多期次多来源的火山型金矿床。
Haxi gold deposit is located in the south of Hatu Mountain, Tuoli County, Xinjiang. The orebodies are found in the basic volcanic rock-pyroclastic rock and are controlled by the Anqi fault. The Anqi fault is the passage for the ore fluid as well as the host structure. The ore types are pyritization basalt, pyritization tuff, py- ritization smash breccia tuff. The δ34S values of pyrites in ores are ＋0. 83‰ ＋ 1.48‰, while δD and δ^34O of water in gaseous-fluid inclusions in the ranges of - 101‰ - 118‰ and 11.31‰ 11.71‰, respectively. The mineralization temperature in Haxi gold deposit is 230 - 280 ℃ and metallogenetie epoch is early Carbonif- erous. The mineralizing fluid is the terminal volcanic fluid mixed with paleo-meteoric water rather than the mag- ma fluid. The interfusion degree of paleo-meteoric water is enhanced with the evolvement of mineralization fluid. It is a multi-stage and multi-origin volcanic-type gold deposit.
出处
《桂林工学院学报》
北大核心
2008年第3期307-311,共5页
Journal of Guilin University of Technology
基金
国土资源大调查项目([2005]003)
关键词
金矿床
地质特征
控矿构造
同位素
新疆
gold deposits
geological character
ore-control structure
isotopes
Xinjiang
