土达坂铅锌矿地质特征及其找矿标志

资源与产业 ›› 2009, Vol. 11 ›› Issue (4): 96-98.

土达坂铅锌矿地质特征及其找矿标志

许文进，李长龙，马振武

（甘肃省地勘局第四地勘院，甘肃酒泉 735000）

收稿日期:2009-05-19 修回日期:2009-06-23 出版日期:2009-09-09 发布日期:2009-08-20
作者简介:许文进（1975— ），男，工程师，主要从事地质矿产勘查工作。E-mail: xwj97@21cn.com
基金资助:
中国地质调查局矿产地质调查项目。

GEOLOGICAL CHARACTERISTICS AND ORE-FINDING INDEXES OF TUDABAN Pb-Zn DEPOSITS

XU Wen-jin, LI Chang-long, MA Zhen-wu

(No.4 Geosurvey, Gansu Bureau of Geological Exploration, Jiuquan 735000, China)

Received:2009-05-19 Revised:2009-06-23 Online:2009-09-09 Published:2009-08-20

摘要/Abstract

摘要：

肃北县土达坂铅锌矿地处祁连造山带与敦煌地块的交接部位，太古宙—古元古代敦煌岩群第二岩组第二岩段是其主要赋存层位。构造和地层是控制土达坂铅锌矿形成的重要因素，其中EW向断裂构造是主要次级控矿构造。Pb元素的富集主要与敦煌岩群有关，而Zn元素可能不但受控于敦煌岩群，而且还叠加了后期花岗质伟晶岩浆热液的影响。敦煌岩群第二岩组第二岩段、蚀变断裂破碎带、地表呈黄色的黄钾铁矾带和铁冒是土达坂铅锌矿的重要找矿标志。

关键词: 敦煌岩群；土达坂铅锌矿；地质特征；找矿标志；肃北县

Abstract:

Tudaban Pb-Zn deposit is located in the transition between Qilian orogen and Dunhuang block, and hosted at the 2nd member of the 2nd formation, Archean-Proterozoic Dunhuang group. The structure and strata are two key factors in the formation of deposit. The EW-orientated fault zone is a major control of mineralization. Pb's concentration is closely related to Dunhuang group, Zn also has been overlapped by post granite hydrotherm. The import ore-finding indexes include the 2nd member of the 2nd formation, Dunhuang group, altered fracture zone, yellow jarosite zone on surface and gossan.

Key words:

Dunhuang group; Tudaban Pb-Zn deposit; geological characteristics; ore-finding indexes; Subei county

中图分类号:

许文进李长龙马振武. 土达坂铅锌矿地质特征及其找矿标志[J]. 资源与产业, 2009, 11(4): 96-98.

XU Wen-jin LI Chang-long MA Zhen-wu. GEOLOGICAL CHARACTERISTICS AND ORE-FINDING INDEXES OF TUDABAN Pb-Zn DEPOSITS[J]. Resources & Industries, 2009, 11(4): 96-98.