独山锑矿区围岩蚀变基本模式及其找矿标志

The Pattern of Wallrock Alteration in and Prospecting Criteria of Dushan Antimony Orefield

本文通过对贵州独山锑矿区围岩蚀变的研究,认为借助于围岩蚀变特征能在一定程度上帮助该区锑矿的预测找矿。文中阐述了围岩蚀变的物化作用是该区锑矿化的先决条件,将围岩蚀变的演化大致分为早、中、晚三个阶段,围岩蚀变在空间的分布可分为三个带——中心带、过渡带和外缘带,最后归纳出围岩蚀变类型、强度等五种找矿标志。

The study on wallrock alteration is conducive to carry out prospective value of mineralization. The physical-chemical factors of wallrock alteration of Dushan antimony orefield are the pre-conditions of antimony mineralization in this field. The wallrock alteration can be divided into three stages in time and three zones-core,transitional zone and outer zone in space. Based on the study of types and intensity of the wallrock alteration,five kinds of prostecting cristeria of antimony deposits in the region have been proposed.