河北省北马道金矿地质特征及找矿标志

Geological characteristics and prospecting criteria of Beidao gold deposit in Hebei Province

河北省北马道金矿位于秦皇岛市青龙满族自治县凉水河乡北马道村北山,区内出露地层主要为太古界迁西岩群,本区矿床属中低温热液含金石英脉型金矿床,矿体赋存于太古界迁西岩群的角闪斜长片麻岩中,矿体顶、底板多为角闪斜长片麻岩。矿石矿物成分:矿石呈灰白色,金属矿物主要为黄铁矿、少量的黄铜矿、方铅矿、闪锌矿、自然金及自然银组成,脉石矿物主要为石英,少量的绢云母、绿泥石、方解石等组成。找矿标志:围岩蚀变标志、构造控矿标志、采矿遗迹标志、岩脉找矿标志。

North Gold mine is located in qinhuangdao city,hebei province qinglong manchu autonomous county village of beishan,cold water river township north.In the open country layer mainly archean erathem qix rocks,ore deposits in this area belongs to the low temperature liquid containing gold quartz vein type gold deposit,ore body occurs in archean erathem qix suite of Angle of plagioclase gneiss,the ore body top,bottom Angle of flash plagioclase gneiss.Mineral composition of ore:the ore is gray,the metal minerals are mainly composed of pyrite,a small amount of chalcopyrite,galena,sphalerite,natural gold and natural silver,gangue minerals are mainly quartz,a small amount of sericite,chlorite,calcite and so on.Prospecting signs:wall rock alteration signs,structural ore control signs,mining relics signs,dike prospecting signs.