北祁连榆树沟山金矿区花岗闪长斑岩脉锆石U-Pb年龄、地球化学特征及其地质意义

杨彦,黄增保,郭小刚,许延龙,颜华

Zircon U-Pb Age and Geochemical Characteristics of Granodiorite Porphyry Veins in Yushugoushan Gold Deposit，Northern Qilian Mountain，and Its Geological Significance

Yan YANG,Zengbao HUANG,Xiaogang GUO,Yanlong XU,Hua YAN

图3 榆树沟山金矿花岗闪长斑岩脉野外产出特征及显微照片 （a）、（b）花岗闪长斑岩野外产出特征；（c）花岗闪长斑岩标本；（d）花岗闪长斑岩正交偏光显微照片；Ⅳ-金矿化蚀变带；γπ-花岗闪长斑岩；O1Y-奥陶系阴沟群；Pl-斜长石；Qtz-石英；Ms-白云母

Fig.3 Field output characteristics and microscopic photos of granodiorite porphyry veins in Yushugoushan gold deposit