辽宁猫岭金矿综合信息解释及找矿模型的建立

COMPREHENSIVE INFORMATION INTERPRETATION AND CHECK OF MAOLING GOLD DEPOSITS IN LIAONING

猫岭金矿是通过地质与地球物理、地球化学场分布特征进行综合解释来预测的找矿靶区。通过实地勘查发现了金矿点，再根据成矿预测找矿模式，进行了 1∶ 1万地质、物化探 40 km2综合普查 ,并采取了以猫岭已知矿点为基础，向外扩散普查方法，先后发现了黄家营子、南台子等 8处找矿有利地段，经查证新发现了张家堡子、黄家营子、南台子等金矿床，并根据地质、地球物理、地球化学场分布特征建立了找矿模型，为区域性寻找猫岭蚀变岩型金矿提供了找矿标志和依据。

Maoling gold deposit is a large scale altered rock-type deposit,which was first outlined through comprehensive interpretation on geology,geophysical and geochemical field distribution,then was discovered through on-the-spot exploration. The comprehensive interpretation on 1∶ 200000 aeromagnetic anomaly,gravity anomaly and ispersion train shew the metallogenetic prospect areas in Maoling. In a scope of 40km2 in Maoling, 8 ore-prospecting favourable areas were discovered through 1∶ 10000 comprehensive reconnaissance survey on geology, geophysical and geochemical prospecting, then 5 gold deposits were checked out at Zhangjiapuzi,Huangjiayingzi,Nantaizi,etc. In the end, the comprehensive ore-prospecting signs of Maoling gold deposits are concluded: 1.Geological conditions of ore-prospecting :① Memeber 2 of Gaixian F.is a primary gold-containing source bed ;② NW-trending large scale ductile shear zone is the major structure as passageway for ore fluid and its intersections with NE-strike faults are more favourable location for gold metallogenesis, low-order and NNE-strike faults in the ductile shear zone, and tectonic altered mineralization belts are major host structures;③ Mesozoic anatectic-metasomatic anatectic granite mass is the ore-controlling rock body and a major material source of gold mineralization;④ quartz-arsenopyrite-pyrrhotite assemblage is an esissting sign of a gold orebody. 2.Geophysical ore-prospecting signs:high magnetic,low resistance,high polarizability,negative spontaneous potential. 3.Geochemical ore-prospecting signs:Au,As,Ag,Pb,Zn,Cu,Sb,Ni,Co elements are co-existing association elements.