| 李学智,陈柏林.大平沟金矿床矿石特征与金的赋存状态[J].地质与勘探,2002,(5):49-53 |
| 大平沟金矿床矿石特征与金的赋存状态 |
| ORE FEATURES AND GOLD OCCURRENCE OF THE DAPINGGOU GOLD DEPOSIT, XINJIANG, NORTHWEST CHINA |
| 修订日期：2001-11-20 |
| DOI： |
| 中文关键词: 赋存状态 金矿物 矿石特征 金矿床 韧性剪切带 变晶结构 交代－充填结晶结构 |
| 英文关键词: occurrence, gold mineral, ore feature, Dapinggou gold deposit |
| 基金项目: |
| 李学智 陈柏林 |
| [1]新疆地质调查院第一地质调查所，乌鲁木齐830011 [2]中国地质科学院地质力学研究所，北京100081 |
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| 中文摘要: |
| 大平沟金矿床是受韧性剪切带控制的中温动力变质热液矿床，金矿石主要为蚀变糜棱岩型，夹少量钾长石石英脉型，矿石结构有变晶结构、交代－充填结晶结构两主要类型，矿石构造以块状构造、团块状构造、细脉状构造和浸染状构造为主。金呈独立金矿物（主要为自然金）出现，以包体金、裂隙金、连生金和粒间金等形式嵌布于黄铁矿、黄铜矿、石英、钾长石及方解石等主要载金矿和中，金矿物形态多样，粒度以中细粒为主。上述特点与我国东部地区产于太古变质岩（绿岩带）中的金矿床具有可对比性，也与矿床成因研究的认识相吻合。 |
| 英文摘要: |
| Dapinggou gold deposit is a medium-temperature dynamic metamorphic hydrothermal type deposit controlled by ductile shear zones. It is characterized mainly as altered mylonite type and with partly K-feldspar-quartz vein type. Ore textures are mainly blastic and metasomatic- infilling crystallization. Ore structures are mainly block, crumb, veinlet and disseminated. Gold in the ores appears as independent gold minerals like native gold, occurring in the major gold-carrying minerals like pyrite, chalcopyrite, quartz, K-feldspar and calcite at the state of inter-granular, interlocking, crevice and enclosure. With different shape, the gold minerals are commonly medium-fine grain size. The characteristics of the gold mineral are similar to those deposits in the metamorphic rocks of Archean greenstone belt in the eastern China. |
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