光山凉亭-薄刀岭银金矿床地质地球化学特征  

Geological and Geochemical Characteristics of the Liangting-Bodaoling Silver-Gold Deposit,Guangshan County

作　　者：李连涛[1] 张兴超[1] 史亮[1] 

机构地区：[1]河南省地矿局第三地质调查队,河南信阳464000

出　　处：《华南地质与矿产》2008年第3期7-15,共9页Geology and Mineral Resources of South China

摘　　要：凉亭-薄刀岭银金矿床属构造蚀变岩型。矿体赋存于中元古界信阳群龟山岩组下段第一、二岩性层(Pt2gcd+di)白云石英片岩、碳质绢云石英片岩内,严格受EW向构造破碎带控制。矿化带原生晕表现为高背景值、强异常特征,As,Pb,Mo,Bi指示元素与成矿元素Ag,Au密切相关;成矿热液的运移以渗流为主、渗透为辅。本文通过对该矿床地质、地球化学特征的总结研究,建立了综合找矿标志,对区域同类型矿床的找矿评价具有一定的借鉴和指导作用。The Liangting - Bodaoling silver - gold deposit is a structure - controlled alteration - type deposit. The deposit, which is controlled by the East - West - trending structural fracture zone, occurs in the muscovite - quartz schist and carbonaceous sericite - quartz schist of the first and second lithologic units of the Lower Guishanyan formation, the Xinyang group of the Mesoproterozoic （ Pt2gcd ＋ di）. The primary halos of the mineralized zone present high background level with intense anomaly. The indicative elements （ As, Sb, Mo and Bi ） are closely related to the metallogenic elements （Ag, Au）. The migration of the metallogenic fluid is dominated by seepage flow, assisted by fluid filtration. Based on the study of geological and geochemical characteristics, synthetic prospecting indications are established, which is expected to be a reference to the prospecting assessment of the same type deposit.

关 键 词：凉亭-薄刀岭银金矿 构造破碎带 地质特征 地球化学特征 找矿标志 

分 类 号：P618.51[天文地球—矿床学] P618.52[天文地球—地质学]