甘肃省肃北蒙古族自治县鹰咀山金矿地质特征及找矿方向

Geological Characteristics and Prospecting Direction of Yingzuishan Gold Deposit,Subei Mongolian Autonomous County, Gansu Province

鹰咀山金矿位于北祁连加里东褶皱带的北西缘,岛弧火山岩带之西端,北距阿尔金断裂7km。以阿尔金大型走滑断裂为界,南为祁连山褶皱系北祁连加里东褶皱带,北属敦煌地块万佛峡—大坝新生代断陷盆地。本文着重介绍地质特征并提出找矿方向:①矿区深部工程工作程度低,应加大深部找矿力度;②勘查程度低,加大找矿力度;③充分利用以往化探成果,以期发现富有价值的找矿线索;④对辉长岩接触带加大工作力度,以期新发现更多有价值的矿体。

Yingzuishan gold deposit is located in the northwest margin of the Caledonian fold belt in the North Qilian Mountains,at the western end of the island arc volcanic rock belt and 7 km north of the Altun fault.It is bounded by the large strike-slip faults in Altun,the North Qilian Caledonian fold belt in Qilian Mountain fold system in the South and the North Wanfoxia-Daba Cenozoic fault basin in Dunhuang block.This paper emphatically introduces the geological characteristics and puts forward the prospecting direction:①the low degree of deep engineering work in the mining area should be strengthened;②the low degree of exploration should be strengthened;③making full use of the previous geochemical exploration results in order to find valuable prospecting clues;④intensifying the work on gabbro contact zone in order to discover more valuable ore bodies.