Geological Characteristics and Ore-Searching Direction of Jinlongshan Gold Deposit, Mid-Qinling

The main ore source layer and host layer of Jinlongshan gold minefield are located in upper deronian Nanyangshan formation.The upper cover rock-lower Carboniferous Yuanjiagou formation stratumis a Nany angshan formation and serves as the second important hostore layer.The mineral area is arc-shaped.The four minor axis anticlime,namely Guloushan,Qiuling,Yaojian and Jinlongshan are locate in different positions of the arc-shaped structure.Gold ore bodies distribute mainly in Nanyangshan slate and thin layer limestone,Nanyangshan layer and Yuanjiagou limestone touch belt,and fractures that cutting Nanyangshan on the bias,especially the N-E direction fracture.The ore space of each type of ore body is connected; the origin of each type of ore body is related,which formed "the metalo genic model of three" model.Cover rock layer can form the Sb-Au ore body,featuring "hanging (well,department) have Sbdeposits,foot (well,department) have Audeposits".The ore in Jinlongshan mining area is hold by cover rock layer and ore soure layer,forming "two layer floors" model.It is concluded that the deep Jinlongshan mining area has great gold deposit potential.Gold is expected to be found under Sb mining area in its eastern part; and it is worthwhile to explore gold deposits in Gongguan-Majiagou Hg-Sb deposit belt on on south limb of Jinjiling syncline.