| 新疆哈密玉西银矿床特征及成因 |
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| 引用本文： | 周济元,崔炳芳,陆彦.新疆哈密玉西银矿床特征及成因[J].矿床地质,1999,18(3):209-218. |
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| 作者姓名： | 周济元 崔炳芳 陆彦 |
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| 作者单位： | 1. 中国地质科学院南京地质矿产研究所,南京
2. 成都理工学院,成都 |
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| 摘 要： | 玉西银矿床产在中元古界长城系星星峡群黑云斜长片麻岩和藓县系卡瓦布拉克群大理岩间的韧性剪切带、韧脆性破碎带中；矿体呈脉状、透镜状和似层状；矿石由辉银矿、方铅矿、闪锌矿、黄铜矿、石英和黄铁矿等４０余种矿物组成；围岩蚀变有硅化、内铁矿化和碳酸盐化；经历热液成矿期、叠加成矿期和表生成矿期。矿质源自地壳浅部和深部岩石，介质来自地壳封存水、变质水和雨水的混合水，热源主要来自地壳圈层剪切热。在同构造、中低温、中
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| 关 键 词： | 银矿床 破碎蚀变岩型 玉西 新疆哈密 |
Characteristics and genesis of the Yuxi silver deposit in Hami, Xinjiang |
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| Zhou Jiyuan,Cui Bingfang,Lu Yan.Characteristics and genesis of the Yuxi silver deposit in Hami, Xinjiang[J].Mineral Deposits,1999,18(3):209-218. |
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| Authors: | Zhou Jiyuan Cui Bingfang Lu Yan |
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| Abstract: | The Yuxi silver deposit occurs in the ducitle shear zone and brittle ductile shattered zone between the biotite plagiogneiss of Xingxingxia Group in Mesoproterozoic Changcheng system and the carbonate rock of Kawabulak Group in Jixian System.The orebodies assume veinlike,lenticular and stratoid forms.The ores consist of more than 40 kinds of minerals,such as argentite,galena,sphalerite,chalcopyrite,quartz and pyrite.The wall rock alteration includes silication,pyritization and carbonation.The ore deposit underwent epithermal mineraization,superimposed mineralization and supergene oxidation periods.The first two periods can be further divided into quartz pyrite stage,quartz pyrite chalcopyrite stage and quartz silver polymetallic sulfide stage.The S,Pb,C,H,O isotopes,REE values and initial ratios of ( 87 Sr/ 86 Sr)suggest that ore materials were derived from deep and shallow crustal rocks,the media originated from the mixed waters of formation stored water,metamorphic water and rain water,and the heat source mainly came from crustal interlayer shearing heat.This deposit is a shattered altered rock type silver deposit formed under the condition of syntectonic,meso epithermal,hypabyssal superhypabyssal,low to moderate pressure,low to moderate salinity,weak alkali and weak reduction.The ore deposit is characterized by multi sources,multi period mineralization and environmental differences,which can be attributed to dynamic idnetity,space accordance and superimposed multi period mineralization.All this constitutes the same mineralization system and has guiding significance for exploration. |
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| Keywords: | sliver ore deposit fractured altered rock type Yuxi Xinjiang Hami |
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