地质学报2017，Vol.91Issue(9)：1971-1984,14.
新疆西天山松湖铁矿床叠加成矿过程——来自矿床地质和矿物地球化学的约束
Superposition Mineralization Process of the Songhu Iron Deposit in West Tianshan, Xinjiang: Constraints from Deposit Geology and Mineral Geochemistry
摘要
Abstract
The Songhu iron deposit is a typical iron deposit in the Awulale iron metallogenic belt in West Tianshan, Xinjiang,This iron ore resources of 55.06 million tons, ore body grade of 22％～54％, the average grade of 42％.Study of deposit geology and mineral geochemistry has been carried out in the deposit, with the focuses on alteration and mineralization characteristics, ore types, mineralization periods and mineralization processes.Based on veins penetrating relation, mineral assemblage and texture and structure, wall rock alteration zoning features of the Songhu iron deposit have been classified in detail into three mineralization periods and six mineralization stages.Pulp ore period mineralization temperature ranges from 500 to 650 ℃, and volcanic hydrothermal period is up to 400 ℃ ,The average temperature of the formation of altered mineral chlorite is 312 ℃.REE characteristics of the two types of magnetite have their specificity, with ore pulp magnetite ∑REE value obviously higher than volcanic hydrothermal magnetite, suggesting a high fractionation degree of hydrothermal rare earth elements in the evolution process of hydrothermal fluids.Coupling ore deposit geology and mineral geochemical characteristics, the Songhu iron deposit can be preliminarily ascertained as an ore pulp-volcanic hydrothermal superposition-type iron deposit.关键词
矿床地质/矿物地球化学/矿浆-火山热液叠加成矿作用/松湖铁矿/新疆西天山Key words
ore deposit geology/mineral geochemistry/ore pulp-volcanic hydrothermal superposition mineralization/Songhu iron deposit/western Tianshan in Xinjiang引用本文复制引用
徐洋,杜杨松,喻志勇,欧阳学财,王明阳..新疆西天山松湖铁矿床叠加成矿过程——来自矿床地质和矿物地球化学的约束[J].地质学报,2017,91(9):1971-1984,14.基金项目
本文为中国地质调查局项目"西天山阿吾拉勒铁成矿带典型矿床研究"(编号1212011120497)资助成果. （编号1212011120497）
