福建周宁芹溪银多金属矿地质特征及深部找矿

Geological Features and Deep Prospecting of Qinxi Silver Polymetallic Deposit in Zhongning County,Fujian Province

周宁芹溪银多金属矿床产于南园组第三段流纹质晶玻屑凝灰岩中，矿体呈脉状、透镜状产出。矿物成分以银（金）矿为主，具水平、垂直分带现象。其成因为浅成中低温火山一次火山热液银多金属矿床。根据深部找矿理论及相关矿体的产状、形态及控矿特征，提出955～850m中段可作为新的找矿地段，通过地质勘探，已求得955～850m中段新增（122b＋333）矿石资源储量72．35万t。

Silver polymetallic deposit was decoved in the third rhyolitic vitric tuff of Nanyuan for- mation. Orebodies are vein, lenticular. Mineral composition is mainly of silver （gold） ore, with horizontal and vertical zoning. It is the Shallow into low temperature volcanic subvolca- nic hydrothermal silver polymetallic deposit. According to the theory of deep prospecting and the occurrence, shape and ore controlling characteristics of the related ore bodies, the middle section of the 955 ～ 850 m can be used as a new prospecting area. Through the production and exploration, we has obtained 955～ 850 （122b＋333） of 72.35 × 10^4 t new ore reservees.