| 贾润幸.新疆乌恰炼铁厂地区铁矿床特征及成因分析[J].地质与勘探,2019,55(4):913-924 |
| 新疆乌恰炼铁厂地区铁矿床特征及成因分析 |
| Characteristics and genesis of the iron deposits in the Liantiechang area, Wuqia, Xinjiang |
| 投稿时间：2018-05-28 修订日期：2018-12-30 |
| DOI：10.12134/j.dzykt.2019.04.003 |
| 中文关键词: 铁矿 矿床成因 碳酸盐岩建造 新疆乌恰 |
| 英文关键词: iron deposit, deposit genesis, carbonate formations, Wuqia, Xingjiang |
| 基金项目:中国地质调查局地质矿产调查项目（编号：121201004000150017-47、121201004000160901-67）和国土资源公益性行业科研专项项目（编号：201511016）联合资助。 |
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| 中文摘要: |
| 新疆乌恰炼铁厂地区石炭系碳酸盐岩建造中发育多处小型铁矿，这些铁矿床多受断层或构造裂隙控制，按照矿石矿物组构特征可划分为红山镜铁矿型铁矿和萨热塔什磁铁矿型铁矿，红山镜铁矿型铁矿石主要由镜铁矿、方解石和白云石等组成，萨热塔什铁矿石主要由磁铁矿、镜铁矿、黄铁矿和方解石、石英等组成。本文对两类铁矿床中的岩（矿）石进行了主量元素、微量元素和电子探针分析，研究认为，红山镜铁矿型铁矿和萨热塔什磁铁矿型铁矿的形成都与中石炭统康克林组碳酸盐岩沉积作用和后期构造叠加作用有关，前者成矿物质成分简单、成矿温度相对较低。后者成矿物质成分相对复杂、成矿温度也相对较高，除主要成矿物质来源于中石炭统康克林组碳酸盐岩沉积作用外，可能还有北东向深大断裂带中基性岩浆物质成分的混入。 |
| 英文摘要: |
| There are many small iron deposits in the faults or structural fissures of the Carboniferous carbonate formations in the Liantiechang area, Wuqia, Xinjiang. These iron deposits can be divided into Hongshan specularite-type iron deposit and Saretashi magnetite-type iron deposit according to their mineral compositions in iron ore. The Hongshan specularite-type iron ore is mainly composed of specularite, calcite and dolomite, and Saretashi magnetite-type iron ore comprises magnetite, specularite, pyrite, quartz, calcite and so on. This paper presents analyses of the main elements, trace elements and electron microprobe analysis results of the rocks (ore) from the Saretashi magnetite-type iron deposit and Hongshan specularite-type iron deposits. Results suggest that the Hongshan specularite-type iron deposit has simple mineral composition and relatively low ore-forming temperature, mainly related to the carbonate sedimentation of Conkling Formation in middle Carboniferous and later tectonic superimposition, and the Saretashi magnetite-type iron deposit is featured by relatively complex mineral composition and high ore-forming temperature, not only related to the carbonate sedimentation of Conkling Formation in middle Carboniferous, but also involved in the mixing of basic magmatic materials from a north-east trending major deep fault zone in this area. |
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