| 西昆仑造山带东端新C-2013-198航磁异常处含钴镍矿化超镁铁质岩的发现及其找矿意义 |
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| 引用本文： | 罗志波.西昆仑造山带东端新C-2013-198航磁异常处含钴镍矿化超镁铁质岩的发现及其找矿意义[J].地质与勘探,2020,56(3):512-522. |
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| 作者姓名： | 罗志波 |
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| 作者单位： | 天津市地球物理勘探中心，天津； 天津华北地质勘查总院，天津 |
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| 基金项目： | 中国地质调查局“新疆和田东三县1:5万航磁调查”（编号：12120113072800）、中国国土资源航空物探遥感中心“新疆和田东三县1:5万航磁异常查证”（编号：12120114085701）和天津华北地质勘查局科技创新项目（B类）（编号：HK2019-B5）联合资助 |
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| 摘 要： | 新C-2013-198号航磁异常位于西昆仑造山带东端黄羊滩地区,苏巴什构造结合带南侧。三级查证工作表明,该异常对应地质体为含钴镍矿化超镁铁质岩,由辉橄岩和辉石岩组成。其中辉橄岩Ni含量分布在0.15%～0.32%,Co 0.012%～0.016%,Ni平均品位0.21%,Co 0.014%;辉石岩Ni含量为0.10%～0.19%,Co 0.007%～0.010%,Ni平均品位0.14%,Co 0.008%。含钴镍矿化仅赋存于超镁铁质岩石中,具明显岩浆控矿特征。赋矿超镁铁质岩与伴生辉长岩、斜长花岗岩构成蛇绿岩岩石组合,为西昆仑造山带苏巴什蛇绿岩的一部分。综合分析认为,含钴镍矿化成矿类型为与蛇绿岩有关的岩浆硫化物矿床,具煎茶岭式镍矿成矿特征。推断新疆南部西昆仑地区具有寻找煎茶岭式镍矿的找矿前景。
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| 关 键 词： | 航磁异常查证 苏巴什蛇绿岩 煎茶岭镍矿 找矿前景 西昆仑造山带 |
| 收稿时间： | 2017/11/21 0:00:00 |
| 修稿时间： | 2020/2/10 0:00:00 |
Discovery of cobalt-bearing nickel mineralized ultramafic rocks at the aeromagnetic anomaly C-2013-198, eastern end of the West Kunlun orogenic belt and its significance for prospecting |
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| Luo Zhibo.Discovery of cobalt-bearing nickel mineralized ultramafic rocks at the aeromagnetic anomaly C-2013-198, eastern end of the West Kunlun orogenic belt and its significance for prospecting[J].Geology and Prospecting,2020,56(3):512-522. |
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| Authors: | Luo Zhibo |
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| Institution: | Tianjin Geophysical Exploration Center, Tianjin; Tianjin North China Geological Exploration General Institute, Tianjin |
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| Abstract: | The aeromagnetic anomaly C-2013-198 is located in the Huangyangtan area, southern side of the Subashi tectonic junction zone, eastern end of the West Kunlun orogenic belt. The third-order verification indicates that the anomaly corresponds to a set of cobalt-bearing nickel mineralized ultramafic rocks, including pyroxene peridotite and pyroxenite. The Ni content of pyroxene peridotite ranges from 0.15% to 0.32% with an average value of 0.21%, and the Co content ranges from 0.012% to 0.016% with an average value of 0.014%. The Ni content of pyroxenite ranges from 0.10% to 0.19%, and the Co content ranges from 0.007% to 0.010%. The cobalt-bearing nickel mineralization is hosted only in ultramafic rocks with an obvious magmatic ore-controlling feature. The ore-hosting ultramafic rocks, associated with gabbro and plagioclase granite, belong to Subashi ophiolite in the West Kunlun orogenic belt. Comprehensive analysis suggests that the cobalt-bearing nickel mineralization belongs to magmatic sulfide type related with ophiolite, and can be analogized with the Jianchaling nickel deposit. It is speculated that the West Kunlun area in southern Xinjiang has a great prospecting potential for finding Jianchaling-like nickel deposits. |
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| Keywords: | aeromagnetic anomaly Subashi ophiolite Jianchaling-like nickel deposit prospecting potential West Kunlun orogenic belt |
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