| 张西社,武晓琴.新疆伊吾北山金矿成矿特征及找矿方向[J].矿产勘查,2011,2(5):541-553 |
| 新疆伊吾北山金矿成矿特征及找矿方向 |
| Metallogenic characteristics and prospecting direction of Beishan gold deposit in Yiwu,Xinjiang |
| 投稿时间：2011-01-04 |
| DOI： |
| 中文关键词: 金矿 地质特征 找矿方向 潜火山岩 伊吾北山 |
| 英文关键词: gold deposit geological characteristics prospecting direction submarine volcanic rock Beishan Yiwu |
| 基金项目:“十二五”国家科技支撑计划项目(编号:2011BAB04B05)和公益性行业科研专项经费课题(编号:201111007-3)资助。 |
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| 中文摘要: |
| 新疆伊吾北山金矿处于西伯利亚板块和布克—三塘湖晚古生代早期岛弧东段。产于下泥盆统卓木巴斯套组第二亚组蚀变中—酸性火山碎屑岩中,成矿主要受中—酸性潜火山岩及其上覆围岩中的似环状、放射状断裂—裂隙系统控制。主要金矿化带有11处,金矿体12条。单矿体一般呈脉状、透镜状,多个矿体在空间上具尖灭再现、平行斜列的产出特点。矿化与黄铁绢云岩化关系密切。矿石自然类型以黄铁绢英岩型金矿石、多金属硫化物型金矿石为主,工业类型以高砷硫化物矿石为主。该矿床理想的矿床模式概述为:浅部构造蚀变岩型金矿→中—深部构造蚀变岩多金属硫化物型金矿→深部潜火山(斑)岩多金属硫化物型金矿。深部找矿前景良好,值得进一步综合研究和勘查。 |
| 英文摘要: |
| Beishan gold deposit is situated in eastern section of the Late Paleozoic Booker - Santanghu island arc of Siberian plate in Yiwu Xinjiang. Gold mineralizationoccured in the alternated medium- acidic pyroclastic rocks in the Second subgroup of Zhuomubasitao group in Lower Devonian and was dominated by medium- acidic submarine volcanic rocks and the annular- radial fault-fracture system in the overlying wall rock. There are 11 main gold mineralization belts and 12 gold orebodies. The shape of single orebody is veined or lenticular. A number of orebodies have the occurring characteristics of disappearing somewhere and appearing in others or lying parallel and oblique. Mineralization is related closely with stagespyritesericitization. Natural types of ore are mainly pyrite+sericite and polymetallic sulfide gold deposit, and industrial types are mainly high arsenic sulfide ores. . The ideal deposit mode of this depositis outlined as follows:shallow structural alterated Gold deposit →medium-deep structural altered rocks of polymetallic sulfide gold deposit →deep submarine volcanic(porphyritic) rocks of polymetallic sulfide gold deposit. The exploration prospect is broad in deep area, therefore, general research and exploration should be done further. |
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