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有色金属工程:2019,9(10):-
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新疆哈图金矿成矿流体组分与同位素地球化学特征分析
王人可1, 地里夏提.买买提1, 卡衣沙尔.饿热斯1, 白玉秀1, 王俊林1, 王 勇2, 刘 波2, 林彩香2
(1.新疆大学地质与矿业工程学院;2.西部黄金克拉玛依哈图金矿有限责任公司)
Analysis of Ore-forming Fluid Composition and Isotope Geochemical Characteristics of Hatu Gold Deposit in Xinjiang
WANG Renke1, Dilixiati. MAIMAITI1, Kayishaer.ERESI1, BAI Yuxiu1, WANG Junlin1, WANG Yong2, LIU Bo2, LIN Caixiang2
(1.College of Geology and Mining Engineering,Xinjiang University,Urumqi,Xinjiang;2.West gold Karamay Hatu gold limited liability company,Karamay,Xinjiang)
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投稿时间:2019-01-03    修订日期:2019-02-22
中文摘要: 哈图金矿床位于新疆西准噶尔地区南部,是哈图金矿带中重要的金矿床之一,本文通过对金矿石英脉样品中的石英开展流体包裹体成分分析,结合矿石样品中的毒砂和黄铁矿的硫同位素以及方解石中的碳、氧同位素特征分析,可知,包裹体气相成分以H2O为主,CO2和N2含量次之。液相成分中阳离子以Na+、Ca2+为主,阴离子中以Cl-和SO42-为主,成矿流体属SO42--Cl--Na+-Ca2+型。从早阶段至晚阶段,H2O含量增加,CO2及Na+、Cl-等离子含量降低。硫化物中硫同位素组成为-2.9‰~+0.8‰,集中在0±3‰范围,成矿物质的硫来自岩浆流体或赋矿围岩。方解石中的碳、氧同位素组成中δ13CPDB值为-11.4‰~-9.2‰,δ18OSMOW值为+8.5‰~+17. 4‰,认为成矿流体属大气降水和岩浆水混合流体。哈图金矿与穆龙套型金矿有相似的含矿地层和成矿时间,可以考虑哈图地区寻找穆龙套型金矿的可能性。
Abstract:Hatu gold deposit, located in the south of western junggar region of Xinjiang, is one of the important gold deposits in the Hatu gold belt. In this paper, fluid inclusion composition analysis of quartz in quartz vein samples of gold mine is carried out, and the characteristics of sulfur isotopes of arsenopyrite and pyrite as well as carbon and oxygen isotopes in calcite were analyzed. It can be seen that the gas phase composition of inclusion is mainly H2O, followed by CO2 and N2. The cations in the liquid phase were mainly Na+ and Ca2+, while the anions were mainly Cl- and SO42-. From early stage to late stage, H2O content increased while CO2, Na+ and Cl- plasma content decreased. The sulfur isotope composition of sulfide is -2.9‰ ~ +0.8‰, which is concentrated in the range of 0‰+3‰, the sulfur of ore-forming material comes from magmatic fluid or ore-bearing country rock. The carbon and oxygen isotopic composition of the calcite is δ13CPDB= -11.4‰ ~ -9.2‰, and δ18OSMOW = +8.5‰ ~+17.4 ‰, the ore-forming fluid is considered to be a mixture of meteoric precipitation and magmatic water. Hatu gold deposit has similar ore-bearing strata and metallogenic time to Muruntau gold deposit, the possibility of finding Muruntau type gold deposit in hatu area can be considered.
文章编号:     中图分类号:P618.51    文献标志码:
基金项目:新疆西准噶尔哈图金矿区深部矿床结构模型研究及成矿预测(编号:U1503191)
引用文本:
王人可,地里夏提.买买提,卡衣沙尔.饿热斯,白玉秀,王俊林,王 勇,刘 波,林彩香.新疆哈图金矿成矿流体组分与同位素地球化学特征分析[J].有色金属工程,2019,9(10):.

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