内蒙古索家沟玄武岩覆盖区银铅锌矿地质特征及找矿标志  

Geological characteristics and prospecting indicator of sliver-lead-zinc deposit in basalt-covered area in Suojiagou,Inner Mongolia

作　　者：权知心[1] 李香资[1] 岑朝正[1] 丁军召[1] 张一[1] 王瑾 QUAN Zhi-xin;LI Xiang-zi;CEN Chao-zheng;DING Jun-zhao;ZHANG Yi;WANG Jin(The No.2 Geological Exploration Institute of Henan Bureau of Geology and Mineral Resources,Zhengzhou 460000,China)

机构地区：[1]河南省地质矿产勘查开发局第二地质勘查院

出　　处：《世界地质》2019年第3期737-745,共9页World Geology

摘　　要：索家沟银铅锌矿床位于华北陆块北缘阴山隆起东部。银铅锌矿体主要赋存于玄武岩覆盖层下北西向断裂构造带及燕山晚期酸性岩体上侵形成的张裂隙内。据现有钻探工程初步估算银金属量为1 404 t(大型);铅+锌28万t(中型)。在分析索家沟银铅锌矿成矿地质背景、矿体地质特征及物探异常特征的基础上,提出了该矿与燕山期酸性火山-侵入活动有关,属中低温热液脉状充填型银铅锌矿床,并进一步指出了找矿标志。Suojiagou sliver-lead-zinc deposit is located in eastern Yinshan uplift of northern North China platform.The sliver-lead-zinc orebody mainly occurs in NW-trending fault zone under basalt-covered area and Late Yanshan tensional fissures formed by upward intruding of the acidic rocks.Preliminary estimation of reserves from existing drilling is 1 404 tons of silver metal(large-scale ore),280 000 tons of zinc and lead(medium-scale ore).Based on the analysis of metallogenic background,geological characteristics and geophysical prospecting anomalous characteristics of Suojiagou silver-lead-zine deposit,it is suggested that the deposit is related to the Yanshanian acid volcanic intrusion,which is a medium and low temperature hydrothermal vein filling type silver-lead-zinc ore.The mineral prospecting indicator is then pointed out.

关 键 词：索家沟玄武岩覆盖区 银铅锌矿床 地质特征 找矿标志 内蒙古 

分 类 号：P618.4[天文地球—矿床学] P618.5[天文地球—地质学]