陕西八方山-银母寺铅锌矿床外围成矿条件及找矿方法探讨

八方山-银母寺铜铅锌成矿带位于凤太金铅锌矿集区西部的次级热水沉积盆地中，成矿条件优越，已探明八方山大型铅锌矿床、银母寺中型铅锌矿床及多个小型铅锌矿床。目前已进入寻找隐伏铜铅锌矿阶段，找矿靶区的确定和找矿方法的选择显得尤为重要。通过对带内典型矿床的控矿条件进行分析，矿床明显受一定的层位、热水沉积岩相和次级紧闭（倒转）背斜等因素综合控制。在已知矿床延伸地段及与其控矿背斜平行的次级背斜构造部位，优选甘沟铅锌铜矿点、尖端山东西部及杨家湾铜（铅锌）矿点等为主要找矿靶区，需开展物探工作、大比例尺地质测量及工程验证等综合方法进行找矿勘查。

Discussion on Mineralization Conditions and Prospecting Method in Surroundings of the Bafangshan-Yinmusi Pb-Zn Ore Deposit, Shaanxi Province

The Bafangshan-Yinmusi Pb-Zn metallogenic belt is located in a secondary hydrothermal sedimentary basin in west of the Fengxian-Taibai Au-Pb-Zn ploy-metallogenic zone. The mineralization conditions for the Bafangshan-Yinmusi Pb-Zn metallogenic belt are favorable and Pb-Zn deposits on various scales have been found. It is especially important for choosing prospecting methods since at present it has entered into the stage of prospecting hidden Cu-Pb-Zn deposit. Through analysis of conditions governing mineralization for the typical ore deposits inside the belt, it is known that the ore deposits are obviously controlled by strata, hydrothermal sedimentary lithofacies and secondary inversion anticline. In the extensions of the known ore deposits and secondary anticlines parallel to the known ore control structures, to choose the Gangou, western and eastern extension of the Jianduanshan and the Yangjiawan Cu-Pb-Zn mineralization sites as major prospecting targets and to use physical exploration, large scale geological survey, engineering evaluation and other methods to carry on investigation on the targets are necessary.