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.
出处
《四川地质学报》
2017年第3期413-416,共4页
Acta Geologica Sichuan
关键词
叶腊石
地质特征
热液交代
普甘洪山
pyrophyllite
geological feature
hydrothermal metasomatism
Phouvong
Laos
