摘要
大量的透射电子显微镜(TEM)观察表明:煤系地层中的主要粘士矿物——高岭石有独特的形貌特征。这些特征反映物源、沉积环境以及成岩后生作用的特点。本文将矿物形态与成煤各阶段的地质环境相联系,把煤系地层中高岭石划分为碎屑状高岭石、胶凝状高岭石、玻屑状高岭石、鳞片状高岭石四种形态-成因类型。它们相应的成因类型为沉积成因、胶体成因、火山灰蚀变成因、成岩变质成因。认识和研究高岭石矿物的形态与成因,在煤田地质学领域中有理论和实用意义。
Transmission electron microscopic (TEM) observation shows that the kaolinites in coal series are unique in shape. This may reflect material source, sedimentary environments and nature of diagenetic and deuterogenic processes. Integrating the morphological features with environments, the authors divide the kaolinites in coal series into four shape-genesis types, i. e., clastic kaolinite, coagulative kaolinite, glassy kaolinite and scaly kaolinite, which are respectively sedimentary, colloidal, ash-altered, and diagenetic metamorphic in origin. Studies of the shape and genesis of the kaolinites are theoretically and practically of great significance in coal geology.
出处
《矿物学报》
CAS
CSCD
北大核心
1992年第1期53-57,T002,共6页
Acta Mineralogica Sinica
关键词
煤系
高岭石
形态
成因
电子显微镜
coal series
kaolinite
shape-genesis type
transmission electron microscope
