摘要
老挝南部普甘洪山地区叶腊石矿呈脉状、透镜状、薄层状产出,赋存于下-中三叠统一套酸性火山岩(T1-2λ)的断层、裂隙中,含矿母岩主要为一套灰白色-褐黄色流纹岩及酸性火山碎屑,局部围岩蚀变表现为弱的硅化、高岭土化和地开石化,矿床属火山热液交代蚀变矿床。
Pyrophyllite deposit in the Phouvong region, south Laos occurs as vein, lens and thin layer in faults and fissures of the Lower-Middle Triassic acid volcanic rock(T1-2λ). The host rock is grayish white and brownish yellow rhyolite and pyroclastic rock. Wallrock alteration is characterized by silicification, kaolinization and dickitization. The deposit is volcanic hydrothermal metasomatic one.
引文
[1]王家年.异军突起老挝石[N].经济日报
[2]彭秀文,李广友.浙东南区叶腊石矿床的叶腊石矿物特征及矿床成因的初步探讨[J].浙江地质.1991.7(1):68-74.
[3]汤德平,郑丹威,黄珊珊.“老挝石”的矿物组成及鉴别研究[J].宝石和宝石学杂志.2015.17(1):5.
[4]范文辉,张林,杨兴越等.老挝阿速坡省普甘洪山叶腊石矿地质勘查初步报告[R].四川省地质矿产勘查开发局四〇四地质队.2015.