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云南播卡金矿成因分析

张建斌 肖红

地质找矿论丛2011,Vol.26Issue(4):399-405,7.
地质找矿论丛2011,Vol.26Issue(4):399-405,7.

云南播卡金矿成因分析

Genesis of Boka gold deposit, Yunnan province

张建斌 1肖红1

作者信息

  • 1. 北京中金泰科勘探技术有限公司,北京 100089
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摘要

Abstract

Boka gold deposit is located in the middle-south Kangdian axis, west margin of Yangzi platform, hosted by rocks (carbonaceous slate, carbonaceous sandstone) of Yinmin Formation and Pingdings-han Formation of Mesoproterozoic Kunyang group and intermediate-basic dykes and controlled by Xiaoya-jiao-Jiangjiawan brittle-ductile shear zone. There are numerous ore bodies in lens, vein and chamber but ore is dominated by breccia and quartz vein types with simple mineralogy. Wallrock alteration is developed and closely related to mineralization. The deposit is a medium-epithermal Au deposit formed at range of 114. 5 ~ 236. 7°C under weak acidic condition according to fluid inclusion measurement and ore fluid dominated by hot underground brine incorporated with magmatic and meteroic water. Genetically, Boka gold deposit is a shear zone type gold deposit.

关键词

播卡金矿/矿床成因/金矿类型/脆—韧性剪切带/云南省

Key words

Boka gold deposit/ genesis/ deposit type/ brittle-ductile shear zone/ Yunnan province

分类

天文与地球科学

引用本文复制引用

张建斌,肖红..云南播卡金矿成因分析[J].地质找矿论丛,2011,26(4):399-405,7.

地质找矿论丛

OACSCDCSTPCD

1001-1412

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