河北凤山金矿床地质特征及找矿标志  

Geological charactenstics and prospecting criteria of Fengshan gold deposit,Hebei

作　　者：刘德武[1] 刘玉翠[1] 董培培[1] 王金芳[1] 白卉[1] 杨轩[1] 

机构地区：[1]石家庄经济学院资源学院,石家庄050031

出　　处：《矿产勘查》2012年第1期47-50,共4页Mineral Exploration

摘　　要：凤山金矿床位于河北省丰宁满族自治县凤山镇西南15km处,是近年发现的小型石英脉型金矿床,Au品位(2～40)×10-6。矿床赋矿地层为太古宇单塔子群黑云斜长片麻岩和斜长角闪片麻岩。矿床由Ⅰ号、Ⅱ号和Ⅲ号矿体及相关的蚀变破碎带构成,矿体呈脉状和透镜状分布。矿床围岩蚀变强烈,主要为钾化、硅化、绢云母化和碳酸盐化,并具有明显的垂直分带性。矿石类型主要为块状、细脉状—网脉状含金黄铜矿矿石、方铅矿—闪锌矿—黄铜矿多金属硫化物矿石和稠密浸染状黄铁矿矿石,并表现出明显的垂直分带性。矿床具有明显的地质、地球物理找矿标志。Fengshan gold deposit locates in the eastern part of the Zhangjiakou - Fengning - Chengde gold metaUogenie belt,this deposit is quartz vein type gold deposit, and was found in recent years. It occurs in biotite plagioclase gneiss and plagioelase - hornblende gneiss of Dantazi group, Arehean. The deposit constituted by No. I , No II , No. 1II ore bodies and related altered fracture zone. The ore bodies distribution of veins and lens. Wall rocks suffered extensive alteration, mainly as potassie,silicifieation, serieitization and carbonatation, and alteration have the characteristics of vertical variations obviously. Types of ores mainly includes massive,veinlets chalcopyrite including gold, galenasphalerite- ehalcopyrite polymetallic sulfides ore, and densely -disseminated pyrite. Mineraliza- tion of the Fengshan gold deposit also shows vertical variation. The deposit has obvious geological and geophysical prospecting criteria.

关 键 词：金矿床石英脉地质特征 找矿标志河北凤山 

分 类 号：P618.51[天文地球—矿床学] P618.404[天文地球—地质学]