地质科学
     首页 | 过刊浏览 |  本刊介绍 |  编委会 |  投稿指南 |  期刊征订 |  留言板 |  批评建议 |  联系我们 |  English
地质科学  1995, Vol. Issue (4): 363-373    DOI:
论文 最新目录 | 下期目录 | 过刊浏览 | 高级检索  |   
四川木里耳泽岩溶型金矿床形成条件和成矿机制
郑明华, 阳正熙, 顾雪祥
成都理工学院 成都 610059
METALLOGENIC ENVIRONMENT AND GENETIC MODEL OF ERZE KARST-TYPE GOLD DEPOSIT OF MULI, SICHUAN PROVINCE
Zheng Minghua, Yang Zhengxi, Gu Xuexiang
Chengdu Institute of Technology, Chengdu 610059
 全文: PDF (2942 KB)   HTML( )   输出: BibTeX | EndNote (RIS)      背景资料
摘要 四川本里耳泽金-菱铁矿建造矿床,赋存于上二叠统海相碳酸盐岩层中,矿化受古岩溶的严格控制,组成矿石的基本矿物为菱铁矿,金不均匀地分布于菱铁矿矿体内。成矿溶液来自加热的循环地下水。成矿过程分为早阶段和中-晚阶段。成矿温度为156-210℃,成矿深度小于1km.成矿物质主要来自地层。成矿热液呈碱性和弱还原性,贫硫,含中等盐度。矿床形成时的地质构造环境较稳定。这是我国仅见的一种特殊金矿类型。
服务
把本文推荐给朋友
加入我的书架
加入引用管理器
E-mail Alert
RSS
作者相关文章
郑明华
阳正熙
顾雪祥
关键词木里耳泽   岩溶型金矿床   金-菱铁矿建造   四川省     
Abstract: Erze karst-type gold deposit of Muli, Sichuan, discovered in the western margin of Sichuan-Yunnan metallogenic belt, is tectonically located in the transitional belt between Songpan-Gauze fold system and Yangtze paraplateform.The deposit occurs in the Upper Permian marine carbonate formation. The occurence of orebodies is strictly restricted within the Palaeokarst. The orebodies,which have complex morphology and sharp boundaries with enclosing rocks, are generally in sack-like, with rising and falling roof as well as bottom commonly developing “fibrous roots". Siderite is the dominant ore mineral, of which about 90percent of an orebody is composed, with minor quartz and pyrite. Native gold,and, secondly, electrum occur in the siderite bodies unevenly.It shows that the origin of the deposit is associated with a meteoric hydrothermal convection system. Two successive stages of ore-forming process are distinguished:the early one followed by the middle-late one. Temperatures range between 156 and 210℃, and depth is less than 1 km. It is suggested that the carbonate formation is the source bed.The solution is charaterized by alkli, weak in reduction, poor in sulfur, and medium salinity. It is interpreted that during the mineralization the tectonic environment is relatively stable, both gentle uplift and ground water convection are the necessary conditions for the karst development which created the best room for migrating solution and ore deposition; after the gold-siderite ore formation deposit formed. It was strongly suffered from weathering, leading to the widespread development of secondary oxide and the further enrichment of gold.It is a rather unusual and very important gold-deposit type, found only in our country so far. Obviously, it is necessary to study it more in detail.
Key wordsErze of Muli   Karst-type gold deposit   Gold-siderite formation   Sichuan province   
收稿日期: 1994-04-04;
引用本文:   
郑明华,阳正熙,顾雪祥. 1995, 四川木里耳泽岩溶型金矿床形成条件和成矿机制. 地质科学, (4): 363-373.
Zheng Minghua,Yang Zhengxi,Gu Xuexiang. METALLOGENIC ENVIRONMENT AND GENETIC MODEL OF ERZE KARST-TYPE GOLD DEPOSIT OF MULI, SICHUAN PROVINCE[J]. Chinese Journal of Geology, 1995, (4): 363-373.
 
没有本文参考文献
[1] 蒋磊 汪滢 曾祥武 聂晓勇. 新疆西准噶尔哈西金矿成矿流体地球化学特征及流体来源[J]. 地质科学, 2019, 54(4): 1370-1382.
[2] 王良果 陈龙 张华 蒲刚 赵军 陈中操 蒋尚志. 西秦岭马脑壳金矿床构造变形特征与成矿关系研究[J]. 地质科学, 2019, 54(4): 1383-1398.
[3] 柴凤梅 许强奋 王雯 王海培. 东天山黄土坡铜锌矿床成矿流体的氦-氩同位素示踪[J]. 地质科学, 2017, 52(4): 1263-1281.
[4] 肖庆玲 周涛发 张达玉 钱祥 陈雪锋 陈杨. 皖南花山锑金矿床硫化物电子探针分析及其指示意义[J]. 地质科学, 2017, 52(4): 1312-1326.
[5] 刘文斌, 赵建敏, 姬青海, 张明云, 赵珂, 刘传权. 西藏丁青县扎格拉金矿床地质特征、流体包裹体特征及成因[J]. 地质科学, 2014, 49(4): 1169-1183.
[6] 姜启明, 鲁挑建. 甘肃礼县中川地区金矿成岩和成矿年龄的SHRIMP厘定[J]. 地质科学, 2014, 49(4): 1184-1200.
[7] 王长乐, 张连昌, 刘利, 代堰锫. 条带状铁建造(BIF)的形成时代及其研究方法[J]. 地质科学, 2014, 49(4): 1201-1215.
[8] 李忠, 刘铁兵. 贵州中三叠统烂泥沟金矿有机质的初步研究[J]. 地质科学, 1995, (3): 283-290.
 
版权所有 © 2009-2017 《地质科学》编辑部
地址:北京9825信箱  邮政编码:100029
电话:010-82998109  010-82998115
京ICP备05029136号-10