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Characterization and Genetic Interpretation of Clays in an Acid Brown Soil (Dystrochrept) Developed in a Granitic Saprolite
Soil clays Weathering Soil vermiculite Soil smectite Hydroxy-Al intergrades Chlorite Dystrochrept
2012/1/4
X-ray diffraction and chemical analyses were performed on clay fractions separated from an acid brown soil (Dystrochrept) by means of size fractionations using high-gradient magnetic separation techni...
Weathering of Iron-Bearing Minerals in Soils and Saprolite on the North Carolina Blue Ridge Front: II. Clay Mineralogy
Chlorite Goethite Hematite Iron Kaolinite Mossbauer spectroscopy Saprolite Soils Vermiculite Weathering
2011/11/30
Abstract: The mineralogy of the clay fraction was studied for soils and saprolite on two Blue Ridge Front mountain slopes. The clay fraction contained the weathering products of primary minerals in th...
Weathering of Iron-Bearing Minerals in Soils and Saprolite on the North Carolina Blue Ridge Front: I. Sand-Size Primary Minerals
Almandine Biotite Chlorite Iron Magnetite Saprolite Soils Weathering
2011/11/30
Abstract: The weathering products of primary biotite, chlorite, magnetite, and almandine in mica gneiss and schist in the North Carolina Blue Ridge Front were determined. Sand-size grains of biotite, ...
Ferrian Saponite in a Gabbro Saprolite at Mont Megantic, Quebec
Ferric iron Genesis Oxidation Saponite Saprolite Weathering
2012/1/9
Gabbroic saprolite at Mont Mégantic, Quebec, was studied in detail mineralogically to gain a better understanding of the origin of ferruginous smectite reported previously from these rocks. The parent...
Feldspar Weathering in Lateritic Saprolite
Feldspar Gibbsite Halloysite Kaolinite Noncrystalline material Weathering
2011/11/25
Abstract: Feldspars in granitic saprolite in southwestern Australia have altered to halloysite, kaolinite, and gibbsite with no evidence of noncrystalline material. The secondary minerals are commonly...
Geochemistry and Mineralogy of an Unusual Diabase Saprolite Near Columbia, South Carolina
Bulk density Diabase Kaolinite Oxidation Saprolite Smectite Weathering
2012/2/8
Empirical reaction progress diagrams showing the trends of major element oxide concentrations (in g/cm3) as functions of bulk density for a diabase saprolite reveal discontinuities in the trends of Al...
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...
Clay mineral associations in saprolite of two andesites from the Cascade Range of northeastern California were determined. Sesquioxidic allophane with a high CEC delta value dominates the clay fractio...