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A Comparative Study of the Diagenetic Alteration of Clay Minerals in Mesozoic Shales from Papua, New Guinea, and in Tertiary Shales from Louisiana, U.S.A.
Diagenetic Alteration Clay Minerals Mesozoic Shales
2011/11/17
Abstract: Gradual change from 60% montmorillonite/40% illite randomly interstratified clay minerals at 3500 ft depth to 20% montmorillonite/80% illite at 10,200 ft can be observed in a complete sectio...
Sequential Active Alteration of Rhyolitic Volcanic Rock to Endellite and a Precursor Phase of It at a Spring in Michoacan, Mexico
Sequential Active Alteration Rhyolitic Volcanic Endellite Precursor Phase
2012/2/20
Sequential alteration of volcanic rock of rhyolitic composition to a precursor of endellite, and thence to tubular endellite, may be observed at a hot spring about 27 km north of Ciudad Hidalgo, Micho...
Flint Clay by Hydrothermal Alteration of Sedimentary Rock in Mexico
Flint Clay Hydrothermal Alteration Sedimentary Rock Mexico
2012/2/20
This paper documents the first report of flint clay in Mexico, located at Estola, Guerrero, 199 km south of Mexico City, on Mexico Highway 95. It is the first report (known to the writers) of flint cl...
The composition and physical properties of three clay soils were altered by introducing aluminum under an electro-chemical gradient in order to evaluate the role of pH in controlling changes in soil c...
Hydrothermal Alteration of a Rhyolite Flow Breccia near San Luis Potosi, Mexico, to Refractory Kaolin
Hydrothermal Alteration Rhyolite Flow Breccia San Luis Potosi Refractory Kaolin
2012/2/21
A deposit of kaolin clay, the site of the General Zaragosa Mine, located about 50 km northwest of San Luis Potosi, S. L. P., Mexico, has produced more than 250,000 tons of refractory clay by room and ...
Electron-Optical Study of Hydrothermal Fringe Alteration of Plagioclase in Quartz Monzonite, Butte District, Montana
Electron-Optical Study Hydrothermal Fringe Alteration Plagioclase Quartz Monzonite
2012/2/21
Plagioclase feldspar is one of the outermost minerals destroyed in the hydrothermal alteration of quartz monzonite of the Butte district, Montana. Single grains of andesine plagioclase showing varying...
The Influence of Alkaline Solutions on the Alteration of the Clay Minerals
Alkaline Solutions Alteration of the Clay Minerals
2011/11/16
Abstract: The influence of an alkaline environment on clay mineral alterations in the laboratory was studied by means of one-dimensional structural analyses. Samples of illite, illite-mixed-layered ma...
Electron-Optical Study of Alteration to Smectite in the Cheto Clay Deposit
Electron-Optical Study Alteration Cheto Clay Deposit
2011/11/16
Volcanic ash of latitic composition in the Pliocene Bidahochi formation of northeastern Arizona has been altered in place to smectite clay. The Cheto clay, a 4-ft thick bed of high-quality activable s...