钾长石是花岗岩类的主要造岩矿物,其含量多少是花岗岩分类命名的重要依据之一。对它的成分、分布、形态特征和结构状态的研究可为花岗岩的成因演化及成矿提供重要信息。波密-察隅地区属冈底斯-念青唐古拉构造域的南东延伸部分,区内分布着走向北西- 南东的扎西则、德姆拉、阿扎贡拉、察隅四条大致平行的花岗岩带,时代为燕山晚期至喜 Potash feldspar is the main granitic rock-forming minerals, its content is one of the important basis for the classification of granite classification. The study of its composition, distribution, morphological characteristics and structural state can provide important information for the genesis and mineralization of granite. The Bami-Zayu area belongs to the south eastern extension of the Gangdise-Nyainqentanglá tectonic domain. There are four broad areas parallel to the Tashi, Zemla, Azagorra, Granite belt, the era of late Yishan happy