| 曾威,孙丰月,张雪梅,万多,许庆林.新疆西昆仑特格里曼苏砂岩型铜矿地质特征及成因探讨[J].地质找矿论丛,2012,27(3):284-290 |
| 新疆西昆仑特格里曼苏砂岩型铜矿地质特征及成因探讨 |
| Geological characteristics of Teglimansu sandstone-hosted copper deposit in west Kunlun Mountains in Xinjiang and the genetic discussion |
| 投稿时间：2012-01-16 |
| DOI：10.6053/j.issn.1001-1412.2012.03.004 |
| 中文关键词: 特格里曼苏 砂岩型铜矿 沉积成岩成因 流体包裹体 西昆仑 新疆维吾尔自治区 |
| 英文关键词:Teglimansu sandstone-hosted copper deposit sedimentary genesis fluid inclusions the west kumlun mountains Xinjiang |
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| 中文摘要: |
| 特格里曼苏铜矿产于库山河群(C1k)砂岩中,矿体呈层状、似层状产出,受地层控制,浅色砂岩与紫色砂岩的交互带是铜矿体产出的最有利层位。通过对含矿砂岩胶结物的研究,认为赋矿砂岩中胶结物类型主要有碳酸盐胶结、硅质胶结、泥质胶结和铁质胶结4种,常见的胶结物组合类型有碳酸盐-硅质胶结组合、碳酸盐-泥质胶结组合、硅质-泥质胶结组合、铁质-泥质-碳酸盐胶结组合;矿化常发生于具碳酸盐-硅质胶结组合的砂岩中,铜矿物与硅质胶结物伴生。通过对含矿砂岩胶结物中流体包裹体研究,得到成矿流体为低温、低盐度流体。认为矿床成因为沉积成岩成因,古陆的风化剥蚀提供了基本的成矿物质,沉积物的搬运沉积形成了矿源层,成岩作用时期由于有机质及细菌的作用、氧化还原条件的改变,在成岩流体的迁移下造成了铜质的局部再富集,形成具有工业意义的铜矿体。 |
| 英文摘要: |
| Teglimansu copper deposit is hosted by (C1k) sandstone of Kushanhe Group in Akto county, Xinjiang Autonomous Region. The ore body is controlled by stratum occurring in multi-layers and layeroid form. Alternated zone of light and purple sandstone layers are favorable horizons of the copper ore body. There are 4 types of main cementing materials in the sandstone, i.e. carbonate, siliceous, argillaceous and ferruginous cementing materials and carbonate-siliceous, carbonate-argillaceous, siliceous-argillaceous and ferruginous- argillaceous-carbonate cementing associations are common. Mineralization often occurs in sandstone with carbonate-siliceous association. Copper minerals are associated with siliceous cement. Reaserch of fluid inclusions in the cements shows that ore fluid is in low temperature and low salinity and the copper deposit is considered a sedimentary ore deposit. Weathering and erosion of paleo-continent supply materials for transportation and laid-down of ore source bed. During diagenesis of the bed organic matter and bacterium incorporated and redox condition changed and copper was remobilized by diagenetic fluid resulting in local enrichment of copper and industrial ore bodies formed. |
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