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Effects of Substitution of Germanium for Silicon in Imogolite
Germanium Imogolite Infrared spectroscopy Ionic substitution Synthesis
2012/2/7
Imogolites in which a part or all of Si was substituted with Ge were synthesized from solutions containing aluminum ion and silicic and/or germanic acid. The products were similar to natural imogolite...
Scanning Electron Microscopic Study of Imogolite Formation from Plagioclase
Alteration Fiber Imogolite Plagioclase SEM Weathering
2012/2/9
Imogolite occurs as tiny bumps less than 0.05 祄 in diameter and about 0.3 祄 long on amorphous thin layers on the surface of weathered plagioclase. The bumps grow outward from the surface to form proje...
Imogolite and Allophane Formed in Saprolite of Basalt on Maui, Hawaii
Imogolite Allophane Saprolite Basalt
2012/2/20
Inorganic gel and allophane collected from basaltic saprolite on Maui, Hawaii, and studied by Patterson in 1964 were reexamined. The main constituent of the gel is imogolite, and gibbsite and allophan...