中秦岭金龙山金矿床地质特征及找矿方向  

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

作　　者：刘新会[1] 刘爽[1] 杨登美[1] 路自民 

机构地区：[1]武警黄金第五支队,陕西西安710100 [2]甘肃省成县黄金局,甘肃成县742500

出　　处：《西北地质》2008年第1期81-89,共9页Northwestern Geology

基　　金：中国地质勘查项目;陕西省镇安县金龙山金矿床深部成矿预测研究(2007~2008)

摘　　要：金龙山金矿区主要矿源层和容矿层为上泥盆统南羊山组,其上覆盖层下石炭统袁家沟组是次要的含矿层位。矿区弧形构造发育,古楼山、丘岭、腰俭、金龙山等四个短轴背斜分别位于弧形构造的不同部位中。金矿化体主要分布于南羊山组板岩和薄层灰岩层间、南羊山组板岩与袁家沟组灰岩接触带及斜切南羊山组的断裂中,尤其是NE向断裂是主要的含矿断裂。控矿空间相互之间相通,各种类型的矿化体之间有成因联系,形成了"三位一体"成矿模式;盖层中可形成锑金矿化体,其特征是"上(盘、部)有锑矿下(盘、部)有金矿";金龙山矿区由盖层和矿源层共同含矿构成了"二层楼"成矿模式。笔者得出,在金龙山矿区深部具有很大的找金潜力,在其东部锑矿下部有望找到金矿化体,在金鸡岭向斜南翼的公馆-马家沟汞锑矿带内有进一步找金的必要。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 stratum is a Nanyangshan formation and serves as the second important host ,ore 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 metalogenic model of three＂ model. Cover rock layer can form the Sb-Au ore body, featuring ＂hanging （well, department） have Sb deposits, foot （well, department） have Au deposits＂. The ore in Jinlongshan mining area is hold by cover rock layer and ore soure layer, forming ＂two layer floors＂ model. It is concludedthat 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 belton on south limb of Jinjiling syncline.

关 键 词：短轴背斜 金矿床 成矿模式 找矿方向 金龙山 

分 类 号：P618.51[天文地球—矿床学]