摘要
双王金矿床属大型低品位角砾岩型金矿.矿床直接赋存层位是中泥盆统古道岭组,矿体隐伏或侧伏于含铁白云石胶结角砾岩带中;热液活动可划分5个期次,其中Ⅱ1黄铁矿钠长石亚阶段和Ⅲ2黄铁矿亚阶段为主要成矿阶段,主要载金矿物为黄铁矿.赋存于中泥盆统古道岭组黄铁矿含铁白云石角砾岩是最明显最直接的找矿标志;而更广泛的钠长石化指示角砾岩带的存在;Ⅱ1和Ⅲ2的存在为金矿化较好地段;黄铁矿的包体爆裂个数在700个以上,显示为金矿化较好地段;黄铁矿的热电性特征在矿体中心以N型为主,矿体边部以P型为主;金的分散流异常、土壤地球化学异常、矿体空间分布的等距性都为找矿提供一定的标志.
Shuangwang gold deposit is large with a low tenor breccia in southwest of Taibai, Shaanxi Province. The deposit lies directly in Gudaoling group. The mineral genetic epoch may be divided into five phases withⅡ_1 and Ⅲ_2 second phases as the main phases. The pyrite is a primary mineral carrier of gold. The breccia is an obvious indicator. The extensive albitization indicates the existence of breccia. Ⅱ_1 and Ⅲ_2 second phases prove to be fine mineralization phases as the pyrite inclusions crack number is greater than 700.The pyrite pyroelectricity characteristics, the gold dispersion halo anomaly, the soil geochemistry anomaly and the approximation equidistant metallogenetic regularity are all indicators.
出处
《桂林工学院学报》
2004年第1期19-23,共5页
Journal of Guilin University of Technology
关键词
双王金矿床
地质特征
角砾岩
找矿标志
陕西
Shuangwang gold deposit
geological characteristics
breccia
indicators
Shaanxi
