Mineralogy of selected soils from Guam, with a section on description of soil profiles

Abstract

Methods of examination._______________ Mechanical analysis______________ Chemical analysis________________ Mineralogical analysis ____________ Results of analyses___________________ Mechanical composition ____________ Soil reaction. _____________________ Chemical composition______________ Atate clay on volcanic rocks _ _ _ _ Asan clay on volcanic rocks_____ Guam clay on limestones _______ Fossil red latosol_____________ Chacha clay on limestone_______ Chemical characteristics--______ Free iron oxide________-__________. Ion-exchange capacity______________ Organic matter____________________ Mineralogical composition__________ Sand fractions_______________ Clay and silt fractions_________. Soil genesis.__________________________ Evidence from chemical composition. Soils on volcanic parent rocks. _. Silica removal____________. Alumina accumulation___.

Mineralogical characterization of acid weathered phyllosilicates with implications for secondary martian deposits

“…metahalloysite ? kaolinite (Carroll and Hathaway, 1963). In our experiments leached montmorillonite samples are consistent with an Alsilicate mineral type, both in structure (Fig.…”

Clay Mineral Distribution in Surface Sediments of the Laptev Sea: Indicator for Sediment Provinces, Dynamics and Sources

“…Exposed to a temperate-humid climate the weathering of basaltic rocks may lead to the formation of smectite (e.g., Charnley, 1987 andWeaver, 1989). With increasing soil development under a tropical climate smectite formed on basaltic substrate transforms gradually into kaolin minerals (Caroll and Hathaway, 1963).…”