| 西藏勒青拉铁矿床地质特征及其找矿意义 |
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| 引用本文： | 范文玉,高大发,张林奎,朱华平.西藏勒青拉铁矿床地质特征及其找矿意义[J].中国地质,2007,34(1):110-116. |
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| 作者姓名： | 范文玉 高大发 张林奎 朱华平 |
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| 作者单位： | 成都地质矿产研究所,四川,成都,610082 |
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| 基金项目： | 中国地质调查局地质调查项目 |
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| 摘 要： | 笔者对勒青拉铁矿床形成的地质背景、矿床地质特征、成矿机制和找矿前景进行了研究。研究结果表明,矿床位于冈底斯岛弧造山带东段北矿带,矿体产出部位严格受碳酸盐岩层位及其层间破碎带的控制,矿体主要为层状。容矿岩石主要为矽卡岩、矽卡岩化灰岩。矿石类型简单,主要为磁铁矿矿石。矿化富集与喜马拉雅早期居布札日花岗闪长岩密切相关,矿床类型属矽卡岩型矿床。勒青拉铁矿床潜在资源量巨大,外围地区具有相同类型铁矿床的找矿远景。
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| 关 键 词： | 勒青拉铁矿 地质特征 矿床成因 资源潜力 西藏 |
| 文章编号： | 1000-3657（2007）01-0110-07 |
| 收稿时间： | 2006-08-07 |
| 修稿时间： | 2006-08-072006-10-25 |
Geological characteristics of the Leqingla iron deposit, Tibet, and their prospecting significance |
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| FAN Wen-yu,GAO Da-f,ZHANG Lin-kui,ZHU Hua-ping.Geological characteristics of the Leqingla iron deposit, Tibet, and their prospecting significance[J].Chinese Geology,2007,34(1):110-116. |
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| Authors: | FAN Wen-yu GAO Da-f ZHANG Lin-kui ZHU Hua-ping |
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| Institution: | Chengdu Institute of Geology and Mineral Resources, Chengdu 610082, Sichuan, China |
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| Abstract: | Lead-zinc mineralization in the Mayuan area,Shaanxi Province,occurs on the southeastern margin of the Beiba uplift on the northern margin of the Yangtze platform.It,>60 km long and 10-200 m wide,may be divided into the north,east and south mineralization zones,in which over 40 lead-zinc orebodies have been delineated.The south mineralized zone is >20 km and 20-120 m.The east mineralized zone is >30 km long and 20-200 m wide,in which seven orebodies have been found at the surface.The north mineralized zone is >10 km long and 10-100 m wide,and the orebodies are generally 100-2560 m long and 0.80-10.01 m thick with a zinc grade ranging between 1.5 and 10.82% and a lead grade of 0.55%-7.54%.The principal orebody has a length of 2560 m and ranges in thickness from 1.46 to 32.53 m,with a mean thickness of 7.60 m,and contains 1.45-11.42% zinc,averaging 4.47%.The mineralized zones are composed predominantly of dolostone of the Sinian Dengying Formation,occurring in doloruditic breccia of the Sinian Dengying Formation.The mineralization is mainly controlled by stratigraphy and structures.It is estimated that the Mayuan area has good ore prospects and potential for forming a superlarge lead-zinc deposit. |
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| Keywords: | lead-zinc mineralization geological characteristics ore-controlling conditions ore guide ore prospect Mayuan Shaanxi |
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