甘肃省孙家沟金锑矿床地质特征和成矿规律及找矿标志  

Geological Characteristics,Metallogenic Regularity and Prospecting Criteria of Sunjiagou Gold-antimony Deposit in Gansu Province

作　　者：李军 Li Jun(Tianshui Mineral Prospecting Institute of Gansu Province Bureau of Non-ferrous Metal Geology and Exploration,Tianshui Gansu 741020,China)

机构地区：[1]甘肃省有色金属地质勘查局天水矿产勘查院,甘肃天水741020

出　　处：《山西冶金》2024年第7期226-228,241,共4页Shanxi Metallurgy

基　　金：甘肃省自然资源厅地质勘查基金项目:甘肃省徽县孙家沟金锑矿普查(甘资字〔2021〕37号)。

摘　　要：结合近年来地质勘查资料,以Au1主矿体(成家沟区块)为研究对象,总结了孙家沟金锑矿床地质特征及成矿规律、控矿因素和找矿标志。结果表明:孙家沟金锑矿床共圈定工业矿体8条,低品位矿体7条,矿化体6条,其中Au1矿体、Sb2矿体规模较大,为矿区主要矿体。Au1矿体赋存于隆务河群上组第一岩性段(TL21)的构造破碎蚀变带中,矿体受构造蚀变带控制,含矿岩性主要为砂质、砂钙质板岩夹薄层灰岩和细石英脉。此研究结果可供今后地质勘查参考,也可为下一步找矿勘查工作提供帮助。Based on recent geological exploration data and taking the Au1 main ore body(Chengjiagou block)as the research object,the geological characteristics,ore-forming laws,controlling factors,and prospecting indicators of the Sunjiagou gold antimony deposit were summarized.There are 8 industrial ore bodies,7 low-grade ore bodies and 6 mineralized bodies in Sunjiagou gold-antimony deposit,among which Au1 ore body and Sb2 ore body are the major ore bodies in the mining area.Au1 orebody occurs in the structural fracture alteration zone of the first lithologic member(TL21)of the Upper Formation of Longwuhe Group.The orebody is controlled by the tectonic alteration zone.The ore-bearing lithology is mainly sandy,sandy calcareous SLATE with thin layer limestone and fine quartz veins.This research result can serve as a reference for future geological exploration and also provide assistance for the next step of mineral exploration work.

关 键 词：孙家沟 矿床地质特征 控矿因素 找矿标志 

分 类 号：P618[天文地球—矿床学]