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| 新疆磁海铁（钴）矿床次火山热液成矿学 | |
| 引用本文： | 薛春纪,姬金生,杨前进.新疆磁海铁（钴）矿床次火山热液成矿学[J].矿床地质,2000,19(2):156-165. |
| 作者姓名： | 薛春纪 姬金生 杨前进 |
| 作者单位： | 1. 中国地质科学院博士后研究流动站,北京;西安工程学院,西安 2. 西安工程学院,西安 3. 冶金部西北地质勘查局,西安 |
| 基金项目： | 冶金部西北地勘局科研协作项目 |
| 摘 要： | 磁海铁（钴）矿床颇具特色，以“石榴石－透辉石－磁铁矿”为基本矿石建造；成矿作用发生在早二叠世北山裂陷作用和火成活动晚期，以基性次火山岩浆期后富铁流体的（交代）充填为成矿方式，矿体产于辉绿岩体原生裂隙系统；成矿流体的化学演化具有典型（火山）岩浆期后热深演化特点，形成了一系列热液蚀变其中石榴石透辉石岩有别于传统理解的“夕卡岩”；成矿物质源于碱性玄武岩浆，基性次火山岩浆多次脉动式入侵是矿床形成的必要条件 |
| 关 键 词： | 铁矿床 钴矿床 次火山 热液成矿学 |
Subvolcanic hydrothermal metallogeny of the Cihairon (Cobalt) deposit , Xinjiang |
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| Xue Chunji,Ji Jinsheng,Yang Qianjin.Subvolcanic hydrothermal metallogeny of the Cihairon (Cobalt) deposit , Xinjiang[J].Mineral Deposits,2000,19(2):156-165. | |
| Authors: | Xue Chunji Ji Jinsheng Yang Qianjin |
| Abstract: | The Cihai iron(cobalt) deposit has some unique characteristics. The garnet diopside magnetite association is the fundamental ore formation: the metallogenesis was finished in late stage of Early Permian rift faulting and magmatism in Beishan area, and the basic subvolcani magmatic hydrothermal (alteration)filling was its metallogenic pattern, with orebodies appearing in primitive cracks of diabase. The inorganic chemical evolution of the metallogenic fluid shows the typical feature of magnatic hydrothermal process, forming a series of alteration bodies, within which garnet diopside rock is different from the traditional skarn. The metallogenic material was from deep alkalic basaltic magma, and the pulsatory invasion was the necessary metallogenic condition of the ore deposit. This paper describes the geological and geochemical features of the ore deposit and proves its subvolcanic hydrothermal metallogenesis. |
| Keywords: | garnet diopside magnetite subvolcanic hydrothermal fluid iron(cobalt)deposit Cihai Xinjiang |
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