河北东坪金矿田蚀变作用研究

水泉沟超单元碱性岩中产出的东坪金矿田以其产出环境、规模、尤其是特征的蚀变作用为地质界关注，并称之为“钾长石化”。经过较系统的理论研究。对钾长石，碱性长石的含义进行了明确的限定和规范，在此基础上对东坪金矿田的蚀变作用，特别是“钾长石化”进行了系统深入的岩石学，矿物学研究，发现主要是富钠的微斜长石化，斜长石的微斜长石化和微斜长石自身的相转化可能是主要的金矿化蚀变，进而对该矿田的蚀变作用进行了全面系统的

Study on the alteration of Dongping gold orefield, Hebei

Its tectonic setting and scale, especially its characteristic alteration make geologists pay close attention to Dongping gold orefield occurred in Shuiquangou super unit (alkaline rocks). The alteration is always called K feldspathization. According to the systematical theory study, the definition of K feldspar and alkali feldspar are clearly definited. On the basis, alteration of Dongping gold orefield, especially its K feldspathization are systematically and closely studied by petrological and mineralogical methods. It is discovered that the alteration is mainly sodium rich microclinization. Microclinization of plagioclass and facies transform of microcline itself are probably the main gold mineralization alteration.