摘要
龙王沟金矿床是近年来在西秦岭地区金找矿的新突破。金矿化主要产于60-°70°走向的退色蚀变韧性剪切带,退色蚀变韧性剪切带沿木其滩组第二岩性段与第三岩性段接触处发育,但主要发育于第三岩性段中;矿床的主要控制因素为退色蚀变韧性剪切构造带+黄铁矿化+石英脉,矿石类型为石英脉型金矿石和蚀变岩型金矿石;脉石矿物主要为石英、绢云母、方解石、斜长石等,金属矿物主要为黄铁矿,其次可见黄铜矿,斑铜矿、方铅矿,闪锌矿,自然金等。矿石结构主要为鳞片变晶结构,残斑结构,它形粒状结构,构造主要有千枚状构造,条带状构造,块状构造等;金主要赋存在早期形成的石英粒间、裂隙中外,少部分赋存于黄铁矿中,除黄铁矿外,还见有黄铜矿、斑铜矿、方铅矿、闪锌矿等载金矿物,黄铜矿和方铅矿有时呈不规则状或它形粒状分布在黄铁矿裂隙中,本文将金矿化阶段分为三期。
Dragon gold deposit areas in recent years,gold prospecting in the West Qinling breakthroughs.Gold mineralization mainly in the 60 °-70 ° towards the fade altered shear zone,bleaching of wood altered ductile shear zone along the beach and the third set of lithologic second lithologic contact at development,but the main lithology in the third paragraph development;deposits is mainly controlled by the ductile shear zone fade altered pyrite quartz veins,quartz vein type ore gold ore and altered rock type gold ore;gangue minerals are mainly quartz,sericite,calcite,plagioclase,metallic minerals are mainly pyrite,followed by visible chalcopyrite,bornite,galena,sphalerite,native gold and so on.Scale structure of the main ore texture and residual plaque structure,which form granular structure,structure-like structures are mainly phyllite,banded structure,block structure,etc.;Gold Fu exists mainly of quartz grains early formation,the fracture and abroad,few occur in pyrite,in addition to pyrite,but also saw chalcopyrite,bornite,galena,sphalerite and other minerals containing gold,chalcopyrite and galena are sometimes irregular It is shaped like or granular distribution of fractures in pyrite,this article will be divided into three stages of gold mineralization.
出处
《内蒙古石油化工》
CAS
2011年第8期8-10,共3页
Inner Mongolia Petrochemical Industry
