冈底斯驱龙斑岩铜钼矿床的岩浆侵位中心和矿化中心：破裂裂隙和矿化强度证据  

Magmatic intrusion center and mineralization center of Qulong porphyry Cu-Mo deposit in Tibet:Evidence from fissure-veinlets and mineralization intensity

作　　者：肖波[1] 李光明[1] 秦克章[1] 李金祥[1] 赵俊兴[1] 刘小兵[2] 夏代祥 吴兴炳 彭震威 

机构地区：[1]中国科学院地质与地球物理研究所 [2]中国科学院研究生院 [3]西藏巨龙铜矿有限公司,西藏拉萨850030 [4]俄罗斯莫斯科国立莫斯科大学地质系,俄罗斯莫斯科119234

出　　处：《矿床地质》2008年第2期200-208,共9页Mineral Deposits

基　　金：自然科学基金项目(40772066);青藏973项目斑岩铜矿课题(2002CB412605);西藏巨龙铜矿有限公司的资助

摘　　要：驱龙斑岩铜钼矿床是迄今为止在西藏冈底斯成矿带上发现的规模最大的铜矿床。文章根据对驱龙矿区各类岩石破裂裂隙的野外实测数据,结合矿区已有钻孔品位资料,分别绘制了矿区地表破裂裂隙等值线图、走向投影图及梅花图、钻孔5000m海拔标高水平切面Cu、Mo品位等值线图。研究结果表明,驱龙斑岩铜钼矿床的岩石中破裂裂隙相当发育,连成一片,没有明显的多个高值中心,空间上破裂裂隙呈放射状产出;5000m海拔标高水平切面显示Cu、Mo矿化较强、较均匀,矿化呈面状,为典型的由单一斑岩体侵位造成的中心式矿化特征。据破裂裂隙和Cu、Mo矿化空间分布,可确定驱龙矿区岩浆中心和矿化中心均位于钻孔405、1205、801、809所围成的矩形区域附近。The Qulong porphyry Cu-Mo deposit is at present the largest typical pbrphyry type deposit in the Gangdese porphyry copper ore belt. Based on detailed field work, this paper deals with the distribution of fissure-veinlets at the surface and the data of bore core Cu and Mo grades. With these data, the authors drew the contour dia- grams of surface fractures and bore core Cu and Mo grades at the altitude of 5 000 m. These contour diagrams show features of surface fissure-veinlets quotiety and bore core Cu and Mo grades： fissure-veinlets are highly developed and continuously distributed without obvious multiple centers, Cu and Mo mineralizations are also evenly distributed, and the high grade areas are centralized. In the Qulong superlarge porphyry Cu-Mo deposit there only exist a single magmatic intrusion and a mineralization center, both of which are located near the rectangular region formed by drilling cores 405, 1205, 801 and 809.

关 键 词：地质学 驱龙斑岩铜钼矿床 岩浆侵位中心 矿化中心 破裂裂隙 冈底斯 

分 类 号：P618.41[天文地球—矿床学]