内蒙古科右前旗保隆南沟—老敖沟银矿化带岩石特征及其指示意义  

FEATURES OF ROCK AND ITS INDICATIONS IN BAOLONGNANGOU-LAOAOGOU SILVER MINERALIZATION BELT OF KEYOUQIAN BANNER,INNER MONGOLIA

作　　者：刘国庆[1] 黄青山[1] 陈国辉[1] 伍光锋 代晓光[1] 

机构地区：[1]中化地质矿山总局地质研究院,河北涿州072754

出　　处：《化工矿产地质》2011年第4期223-231,共9页Geology of Chemical Minerals

摘　　要：内蒙古科右前旗保隆南沟—老敖沟一带银矿受断裂构造控制,矿体多呈脉状,赋存于上侏罗统玛尼吐组和侏罗纪花岗岩体的蚀变岩中。矿化岩石的主要蚀变有钾化、电气石化、绢云母化、硅化、绿泥石化、绿帘石化等。矿石矿物主要有辉银矿、方铅矿、闪锌矿、毒砂、辉钼矿、辉铋矿、黄铁矿、黄铜矿、磁铁矿、褐铁矿等。通过对矿体地质特征、矿化蚀变、矿化岩石特征、矿石物质组分、结构构造及矿化与蚀变相互关系的研究,初步认为本区银矿属中低温气化热液脉型矿床。The silver deposit in Baolongnangou-Laoaogou mineralization belt of Keyouqlan Banner, inner Mongolia, controlled by the fracture, is hosted in altered rocks of the Upper Jurassic Manketou＇ebo Formation and Jurassic granite body. The main alterations are potassium alteration, tourmalinization, sericitization, silication, chloritization, and epidotization. The ore minerals are argentite, galenite, sogakerutem, arsebiotrutem, molybdenite, bismuthinite, pyrite,： chalcopyrite, magmetite, limonite, etc. According to the study on geological fetrues, mineralizaiton alteration, rock features, mineral components, texture and structure, and relations of mineralization and alteration, we found that the siver depodit is a veined mesothermal-epithermal deposit.

关 键 词：银矿 矿化蚀变 矿化岩石特征 指示意义 内蒙古 

分 类 号：P618.52[天文地球—矿床学]