图1. 福建紫金山矿田地质简图(a)及罗卜岭矿区地质简图(b)(修改自Zhong J等^[22])
1—早白垩世罗卜岭花岗闪长斑岩;2—早白垩世四坊花岗闪长岩; 3—早白垩世火山石帽山岩体;4—第四系冲积沉积物;5—晚侏罗世才溪岩体;6—中侏罗世紫金山复式岩体;7—白垩纪英安玢岩;8—白垩纪隐爆角砾岩;9—早石炭世岩体(林地组);10—晚泥盆世碎屑沉积岩体(天瓦岽组、桃子坑组);11—下震旦统楼子坝群;12—断层;13—264号测线; 14—经典矿床;15—矿化蚀变带(K-Phl:弱钾化-绢英岩化蚀变带,Chl-Phl:弱绿石化-绢英岩化蚀变带,Kl-Phy:高岭石化-黄铁绢英岩化,Ms-Di-Alu:白云岩化-地开石化-明矾石化);16—研究区;17—土壤采样点位;18-钻孔

Fig.1. Geological schematic diagram (a) of Zijinshan ore field in Fujian Province, geological schematic diagram (b) of Luoboling mining area (modified from Zhong J,et al.^[22])
1—early Cretaceous Luoboling granodiorite porphyry;2—early Cretaceous Sifang granodiorite; 3—early Cretaceous Shimaoshan volcanic rocks;4—Quaternary alluvial sediments;5—late Jurassic Caixi monzogranite pluton;6—middle Jurassic Zijinshan granite batholith;7—Cretaceous dacitic porphyries;8—Cretaceous cryptoexplosive breccia pipes;9—early Cretaceous Lindi clasitic sediments;10—late Devonian clasitic sediments (Tianwadong & Taozikeng formations);11—Neoproterozoic Louziba metamorphosed clasitic sediments;12—fault;13—section view of exploration line 264;14—ore deposit;15—mineralization alteration zone (K-Phl: weakly potassium-sericitization alteration zone, Chl-Phl: weakly chlorogenic-sericitization alteration zone, Kl-Phy: kaolinitization-pyrite sericitization, Ms-Di-Alu: dolomitization-kazitritization-alum petrochemistry);16—the study area;17—soil sampling points;18—drill hole