摘要
甘肃西和县三洋坝金矿位于西秦岭厂坝―页水河华里西―印支期铅、锌、金、银成矿带内,西成铅锌矿田西部,属沉积变质―岩浆期后热液叠加改造的变质热液矿床。矿体赋存于泥盆系中统西汉水组中段第三层(D2x2-3)中,受层间裂隙构造控制,与花岗斑岩脉空间关系密切。笔者在总结了成矿地质背景、地质特征的基础上,提出了找矿标志。
Sanyangba gold deposit of Xihe of Gansu,lying in the lead-zinc-gold-silver metallogenicbelt of Variscan-Indo-Chinese epoch in Changba-Yeshuihe area in Western Qinling and in the western part of Xihe-Chengxian lead-zinc ore field,is a metamorphosed hydrothermal fluid deposit formed in the superimposed transformation of the sediment-metamorphosed hydrothermal fluid and post-magmatic hydrothermal fluid. The ore-bodies occurred in the third layer of middle member of Xishui Formation in the Middle Devonian System （D2x2-3 ）,and it was controlled by interlayer fissure structure and spatially related to the granite-por-phyry veins closely.Based on a summary of ore-formation geological settings and geological characteristics, the author proposed the clues for prospecting in the area.
出处
《矿产与地质》
2015年第2期183-188,共6页
Mineral Resources and Geology
关键词
金矿床
地质特征
找矿标志
三洋坝
甘肃
Cu-Au deposit, clue for prospecting, metallogenic prognosis, Pangkuam, Laos
