甘肃省白银矿田火山岩型铜多金属矿床找矿方向探讨  

DISCUSSION ON PROSPECTING DIRECTIONS OF VOLCANIC COPPER-POLYMETALLIC ORE DEPOSITS IN BAIYIN ORE FIELD, GANSU PROVINCE

作　　者：高兆奎[1,2] 陈守宇[2] 韩要权[1] 周宏[1] 

机构地区：[1]甘肃省有色金属地质勘查局,甘肃兰州730000 [2]中国地质大学资源学院,湖北武汉430074

出　　处：《甘肃地质》2009年第3期1-5,共5页Gansu Geology

摘　　要：白银厂火山岩型铜多金属矿找矿经历了铁帽、老窿找矿—地球物理异常找矿等9个阶段,除在第一阶段发现了4个主要矿床发外,其他8个阶段找矿收效不大,仅发现了一个小型矿床,并在找矿有利区发现了一些矿化和小型矿体。经研究,火山岩型铜多金属矿床的找矿预测地质标志主要有火山机构、石英角斑凝灰岩层、背斜构造、钠长斑岩。找矿方向主要有已知矿床深部、具备预测地质标志的成矿有利区、第一火山喷发旋回之下的隐伏含矿层等3个方面。Nine stage prospecting work from gossan and old workings prospecting to geophysical anomaly prospecting has been done in Baiyin ore field, 4 copper-polymetallic ore deposits have been found in the first stage. The other eight stage prospecting work has little effect, only one small deposit , several small ore bodies and mineralized areas have been found. The prospecting prognostic criteria for volcanic copper-polymetallic deposits in the ore field are volcanic apparatus, qanrtz keratophyre tuff strata, anticline, and albitophyre. The prospecting directions are the deep areas of ore deposits found, the suitable ore-forming areas in which there exist the prospecting criteria, and the mineralized qaurtz keratophyre tuff strata which is buried under the oldest volcanic strata outcropping on the surface.

关 键 词：白银矿田 预测标志 找矿方向 

分 类 号：P618.2[天文地球—矿床学]