| 东天山四顶黑山层状岩体地质特征及成矿潜力分析 |
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| 关键词:ore-forming potential mafic-ultramafic stratifield intrusion Ni-Cu sulfide deposit Sidingheishan East Tianshan Mountains |
| 基金项目:国家自然科学基金重点项目(编号: 40534020);中国地质调查局地质大调查项目(编号: 1212010010221);中央高校基本科研业务费专项资金(编号: CHD2011TD007);西部矿产资源与地质工程教育部重点实验室开放基金(编号: CHD2011SY014) |
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| Geological Characteristics and Ore-forming Potential of Sidingheishan Stratified Mafic-ultramafic Intrusion in East Tianshan Mountains |
| The Huangshan mafic-ultramafic rock belt in East Tianshan Mountains has around much interest among geologists due to the development of many mafic-ultramafic intrusions and nickel-copper magmatic sulfide deposits. Located in the eastern part of this belt, the Sidingheishan mafic-ultramafic intrusion is a stratified intrusion composed of clinopyroxene peridotite, olivine pyroxenite, olivine norite-gabbro, olivine gabbro, pyroxene amphibolite, gabbro, hornblende gabbro and diorite, its main rock-forming minerals are chrysolite, bronzite, diopside, hornblende and plagioclase, its differentiation is fairly perfect, and its alteration is well developed. A study of the mineral microstructure characteristics and the calculation show that in Sidingheishan intrusion, olivine was the first crystallized mineral, followed by bronzite and diopside, whose crystallization temperatures were about 1100℃ and 900～1100℃, respectively, and the two minerals in the rock can coexist. The peridotite facies, norite facies, and the chrysolite + bronzite mineral assemblage show that the Sidingheishan intrusion has favorable conditions for the formation of copper-nickel (platinum) deposits. |
| SUN Tao,QIAN Zhuang-zhi,TANG Zhong-li,LIU Min-wu,GAO Ping,ZHANG Jiang-jiang,ZHANG Rui,JIANG Chao.2012.Geological Characteristics and Ore-forming Potential of Sidingheishan Stratified Mafic-ultramafic Intrusion in East Tianshan Mountains[J].Acta Geoscientica Sinica,33(1):38-48. |
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