湖南老鸦巢隐爆角砾岩型金矿床地质特征及找矿标志
收稿日期: 2013-09-26
修回日期: 2013-11-20
网络出版日期: 2014-06-25
基金资助
湖南省老矿山深部和外围找矿项目“湖南省常宁市水口山铅锌多金属矿接替资源勘查”(编号:12120113083300)资助.
Geological Characteristics and Indication for Prospecting in Laoyachao Cryptoexplosive Breccia Pipe Gold Deposit,Hunan Province
Received date: 2013-09-26
Revised date: 2013-11-20
Online published: 2014-06-25
曹琼 , 庞绪成 , 宛克勇 , 罗华彪 , 司江涛 . 湖南老鸦巢隐爆角砾岩型金矿床地质特征及找矿标志[J]. 黄金科学技术, 2014 , 22(1) : 15 -21 . DOI: 10.3969/j.issn.1005-2518.2014.01.015
Laoyachao gold deposit is located in the famous Shuikoushan orefield,the exposed strata are the upper Devonian to lower Cretaceous,the lithology is carbonate,paralic clastic rocks and terrigenous clastic rock.The Indosinian fold and the SN trending fracture are developed,magmation is rather strong.The ore-forming material enriched in the axle of the overturned anticline,the fault zone and surrounding the rock.Laoyachao gold deposit occurs in cryptoexplosive breccia pipe,which is controlled by F1 fault and No.4 granodiorite,alteration of the wall rock is developmend,silicification,pyritization,zinc mineralization has a close relationship with mineralization.Gold mainly exists as native gold,distribute in the gaps of quartz,pyrite,sphalerite and the particle clearances.Mineralization can be divided into skarn stage,hydrothermal stage and supergene stage,hydrothermal stage is the main mineralization stage.Quartz-pyrite-sphalerite-native gold stage is the main stage of mineralization.The main prospecting mark is cryptoexplosive breccia,silicification,sphalerite and pyritization is closely associated with mineralization.
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