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安仰生,姜腾飞,安悦,陆林详.青海省祁连县黑刺沟金矿地质特征及找矿前景[J].山东国土资源,2019,35(2):
青海省祁连县黑刺沟金矿地质特征及找矿前景
Geological Characteristics and Prospecting Prospects of Heicigou Gold Deposit in Qilian County of Qinghai Province
  
DOI:10.12128/j.issn.1672-6979.2019.02.002
中文关键词:  金矿  地质特征  找矿前景  黑刺沟  青海省祁连县  托莱山成矿带
英文关键词:Gold deposit  geological characteristics  prospecting prospects  Heicigou  Qilian county in Qinghai province
基金项目:
作者单位
安仰生 山东省鲁南地质工程勘察院 
姜腾飞 山东省鲁南地质工程勘察院 
安悦 山东省鲁南地质工程勘察院 
陆林详 山东省鲁南地质工程勘察院 
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中文摘要:
      黑刺沟金矿区位于托莱山成矿带之中西部,区内NWW,NW,近NE向断裂及次级构造发育;成矿地质背景良好。为查明区内成矿地质条件,扩大找矿前景,采用激电中梯测量与探矿工程相结合的方法,圈定了8条矿化蚀变体13条金矿体,其中⑤号矿体是区内主要矿体,金品位(1.05~3.42)×10-6,平均品位1.59×10-6。矿体呈透镜状、脉状,产状与断裂构造蚀变带产状基本一致,含矿岩石为凝灰质碎裂岩、构造角砾岩,围岩为早奥陶世阴沟群片理化凝灰岩、安山质凝灰岩,围岩蚀变主要为硅化、黄铁矿化、碳酸盐化、褐铁矿化。该文在阐述黑刺沟金矿床地质特征的基础上,总结了找矿标志和控矿因素,认为找矿潜力较大。
英文摘要:
      Heicigou gold deposit is located in the midwest of Tuolaishan metallogenic belt. Fractures and secondary structures with the trend of NWW, NW and nearly NE are well developed in the area with good geological background of mineralization. In order to identify metallogenic geological conditions and expand the prospecting prospects, by using the combination of IP ladder measurement and prospecting project, 8 altered bodies and 13 gold ore bodies have been circled. Among them, No. 5 ore body is the main ore body in the area. The gold grade is (1.05~3.42) ×10-6 and average grade is 1.59×10-6. The ore bodies are lenticular and vein-shaped, and their attitudes are basically the same as those of the fracture structural alteration zones. The ore-bearing rocks are tuffaceous cataclastic rocks and structural breccia. The wall rocks are foliated tuff and andesitic tuff of early Ordovician Yingou group. The wall rock alteration is mainly silicification, pyritization, carbonation and ferritization. On the basis of expounding geological characteristics of Heicigou gold field, prospecting indicators and ore-controlling factors have been summarized, and prospecting prospect has been analyzed.
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