| 新疆齐求Ⅰ金矿床毒砂及其在金的成矿过程中的作用 |
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| 引用本文： | 贺义兴,胡大干.新疆齐求Ⅰ金矿床毒砂及其在金的成矿过程中的作用[J].矿物学报,1993,13(3):277-281. |
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| 作者姓名： | 贺义兴 胡大干 |
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| 作者单位： | 长春地质学院，长春地质学院，长春地质学院 长春 130026，长春 130026，长春 130026 |
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| 摘 要： | 所研究的毒砂形成两个成矿阶段。成矿前阶段的毒砂具有颗粒粒大、裂隙发育和明显的成分环带等特征。成矿前的裂隙为金的迁移和沉淀提供了良好的空间。成矿期阶段的毒砂颗粒细小,无成分环带。根据形态、分布规律和成分特点,成矿期毒砂可划分为两个世代:早期的,自形程度高,无明显成分异常;晚期的,他形晶,含砷低。毒砂的特性反映了金的成矿作用的演变过程。
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| 关 键 词： | 毒砂 金 矿床 成矿作用 新疆 |
ARSENOPYRITE AND ITS EFFECT ON GOLD MINERALIZATION IN QIQIU No.1 GOLD DEPOSIT,XINJIANG |
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| He Yixing,Hu Daqian,Yao Jie Changchun University of Earth Science,Changchun.ARSENOPYRITE AND ITS EFFECT ON GOLD MINERALIZATION IN QIQIU No.1 GOLD DEPOSIT,XINJIANG[J].Acta Mineralogica Sinica,1993,13(3):277-281. |
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| Authors: | He Yixing Hu Daqian Yao Jie Changchun University of Earth Science Changchun |
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| Institution: | He Yixing,Hu Daqian,Yao Jie Changchun University of Earth Science,Changchun,130026 |
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| Abstract: | Arsenopyrites from the Qiqiu gold deposit have been examined, suggestingthat they formed in two hydrothermal events. The pre-mineralization arsenop-yrite is coarse-grained, with obvious compositional zoning and microfracturesfavouring the transport and precipitation of gold, while the syn-mineralizationarsenopyrite is fine-grained, without compositional zoning. The micromorpho-logy, occurrence and composition of the arsenopyrites indicate that the latterarsenopyrite could be further divided into two generations: the early one ismostly euhedral while the late one is xenomorphic and lower in As, Thefeatures reflect the evolution trend of the gold deposit. |
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| Keywords: | arsenopyrite native gold Au-deposit minerogenesis Xinjiang |
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