CHARACTERISTICS OF MINERAL AND CHEMICAL COMPOSITIONS OF PALYGORSKITE IN THE DAFANG AREA, GUIZHOU
Qiang Lian
Abstract
Qiang Lian
Abstract
Observation through microscope, chemical constitution analysis, X-ray diffraction analysis, differential thermal analysis and infrared spectrum analysis are used to study the mineral composition, ore type and mineral genesis of palygorskite in the Dafang area. The palygorskite can be classified into three types, the thin-medium bedded fibrous palygorskite, the thin-medium disseminated palygorskite and the brecciaed palygorskite. The contents of SiO2 and Al2O3 of the former 2 types are lower than those of the Attapulgite shan and Jiashan of Suwan area. Crystal chemical composition analysis indicates that the fibrous palygorskite of Dafang is hydrothermal in origin. And the observation of clay-brecciaed palygorskite by microscope shows that it is resulted from the deposition.
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Observation through microscope, chemical constitution analysis, X-ray diffraction analysis, differential thermal analysis and infrared spectrum analysis are used to study the mineral composition, ore type and mineral genesis of palygorskite in the Dafang area. The palygorskite can be classified into three types, the thin-medium bedded fibrous palygorskite, the thin-medium disseminated palygorskite and the brecciaed palygorskite. The contents of SiO2 and Al2O3 of the former 2 types are lower than those of the Attapulgite shan and Jiashan of Suwan area. Crystal chemical composition analysis indicates that the fibrous palygorskite of Dafang is hydrothermal in origin. And the observation of clay-brecciaed palygorskite by microscope shows that it is resulted from the deposition.
Key concepts: Palygorskite, Mineral, Mineralogy, Chemical composition, Hydrothermal circulation, Geology, Clay minerals, Geochemistry