| 新疆干梁子锡矿田成岩成矿作用同位素年代学研究及矿床成因探讨 |
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| 引用本文：.1999.Chronology and Oricin of the Canlianczitin Orefield, Xinjiang[J].Mineral Deposits,18(1):91~97 |
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| 基金项目:国家自然科学基金（49633250）和国家305项日(96-915-07-05B) |
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| 中文摘要:干梁子锡矿田位于准噶尔盆地东北缘，构造上处于西伯利亚和哈萨克斯坦-准噶尔板块的交汇部位，是贝勒库都克锡矿带的重要组成部分。地质地球化学和同位素年代学研究表明，干梁子锡矿田的形成与碰撞造山期花岗岩体的侵位有关，属岩浆热液锡矿，成矿时代为中石炭世。 |
| 中文关键词:锡矿田 成岩成矿作用 同位素年代学 矿床成因 新疆干梁子 |
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| Chronology and Oricin of the Canlianczitin Orefield, Xinjiang |
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| Abstract:Located geographically in the northeastern border of Junggar Basin. Uygur Autonomous Region or Xinjiang, and geologically in the juncture or Siberia and Kazakhstan-Junggar palaeoplate, the Gznliangzi tin orefield constitutes an important part of the Beileikudouke tin metallogenic zone in East Junggar area. Five kinds of orebodies in the orefield have been found, namely cassiteirite-quartz vein type, grcisen type, tin-bearing granaite type, alluvial tin type and pegmatitie vein type. The natural forms of the orebodies vary with the host structures, mineralization positions and metallogenic physicochemical conditions, ard comprise simple veins, irregularly shaped veins, beaded wins, lens-shaped veins and lenticular veins. According to occurrence types of ores, mineralization process, paragenetic association and formation order of ore minerals, mineralization of the Ganliangzi tin deposit underwent a very complex process and can be divided into three metallogenic stages, viz., mineralization during late stage of magmatic differentiation and metasomatic alteration, postmagmatic mineralization and superagene leaching mineralization. Geological, geochemical and geochronological studies show that the formation of thc Ganliangzi tin orcfield was related to the granitic bodies of the Carboniferous collision-orogenic cycle. Metallogenic materials came from the lower crust and the metallogenic hydrothermal solution was a typical magmatic one. |
| keywords:Tin orefield, diagenelic mineralization, chronology, origin of deposit |
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