摘要
内蒙古白音查干铅锌银矿目前已发现多条矿体,矿体受断裂构造控制,呈脉状产出,矿石具浸染状、细脉网脉状结构,矿物组合为典型的中低温矿物组合,说明白音查干铅锌银矿属于中低温热液矿床。但前人对已发现矿体中矿物的标型特征研究较少,对地球化学测量结果的高温元素组合研究薄弱,根据矿物标型特征研究结果,闪锌矿从浅部向深部Fe含量增高,颜色变深;磁黄铁矿仅在底部矿体中出现,呈板状晶型;锡石亦只在底部矿体中见到,呈短柱状晶体。根据1∶10000地球化学测量结果统计分析,Pb、Zn、Ag、W、Mo、Sn元素异常均具有内带,浓集中心明显,而且W、Sn、Mo异常套合较好,与前缘元素异常吻合,推测矿区深部很可能存在W、Sn、Mo高温矿体,是进一步找矿的方向。
At present,many ore bodies have been discovered in the Baiyinchagan lead-zinc-silver deposit in Inner Mongolia.Ore bodies are controlled by fault and appear as vein-like occurrence.The ore show dissemination structure and vein-like network,which indicate it belongs to low-medium temperature hydrithermal ore deposit.However,there are few studies on the typomorphic characteristics of minerals in discovered ore bodies,and study of high-temperature elements from geochemical survey is weak.According to research results of mineral typomorphic characteristics,content of Fe in sphalerite increases from shallow to deep,and color becomes darker.Pyrrhotite only occurs at the bottom of ore body and show as plate crystal.Cassiterite is also only found at the bottom ore body,which show as a short columnar crystal.According to the statistical analysis of 1∶10000 geochemical survey results,anomalies of Pb,Zn,Ag,W,Mo and Sn elements all have inner zones,and concentration center is obvious.Moreover,anomalies of W,Sn and Mo are well nested,which are consistent with the anomalies of front elements.It is speculated that there may be high-temperature W,Sn and Mo orebodies in the deep of ore area,which is the direction of further prospecting.
作者
冯健行
许海娃
冯源
赵泽龙
冯乐
FENG Jianxing;XU Haiwa;FENG Yuan;ZHAO Zelong;FENG Le(Inner Mongolia Yicheng Geological and Mineral Exploration and Development Co.,LTD.Xilin Gol League Branch,Xilinhaote 026000,Inner Mongolia,China;Inner Mongolia Fourth Hydrogeology engineering Geological Exploration Co.,LTD,Tongliao 028000,Inner Mongolia,China;Heilongjiang Communications Polytechnic,Harbin 150000,Heilongjiang,China)
出处
《矿产勘查》
2022年第6期737-746,共10页
Mineral Exploration
关键词
白音查干
地质特征
化探异常特征
铅锌银矿床
勘探工程
Baiyinchagan
geological characteristics
geochemical anomaly characteristics
lead-zinc-silver deposit
exploration engineering
