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Unusual M3+ cations in synthetic amphiboles with nominal fluro-eckermannite composition: Deviations from stoichiometry and structural effects of the cummingtonite component
composition stoichiometry Unusual M3+
2012/3/30
Single-crystalstructure-re?nementandelectron-microprobeanalysisofsyntheticam-
phiboleswithnominal?uoro-eckermannitecompositionanddifferenttrivalentcations(Al,3 3 3
Sc,Ti,V ,Cr ,Ga,)showsigni?cantdev...
Frio Shale Mineralogy and the Stoichiometry of the Smectite-to-Illite Reaction: The Most Important Reaction in Clastic Sedimentary Diagenesis
Diagenesis Illite-Smectite Mass Balance Mineralogy Shale
2011/12/22
Abstract: Burial diagenesis of shales of the Frio Formation resulted in an increase in the abundance of mixed-layer illite-smectite (I-S), albite and chlorite, and a decrease in the abundance of K-fel...
Direct oxygen measurements of Cr-rich spinel: Implications for spinel stoichiometry
Direct oxygen measurements Cr-rich spinel Implications spinel stoichiometry
2012/4/6
Theavailability ofa synthetic multilayercrystal and accurately calibrated oxide and silicate standards makeit possible to usethe electron microprobefor precisea analysis ofspinel. Arequirement ofthe a...
Weathering of Hornblende to Ferruginous Products by a Dissolution-Reprecipitation Mechanism: Petrography and Stoichiometry
Gibbsite Goethite Hornblende Iron Kaolinite Neoformation Petrography Scanning electron microscopy Weathering
2012/1/9
Hornblende of the Carrol Knob mafic complex (southern Blue Ridge Mountains, North Carolina) has weathered under humid, temperate conditions. Hornblende weathering appears to have been a dissolution-re...