Results 181 to 190 of about 49,779 (247)
Role of micropores within minerals in retardation of mass transfer by matrix diffusion and sorption in granitic rock. [PDF]
Yuguchi T +4 more
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Petrological diversity of continental arc magmatism evidenced by Triassic magmatic complexes in East Kunlun Orogen. [PDF]
Gan J +6 more
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Late-orogenic retrograde zircon growth. [PDF]
Dyer SC +3 more
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Contrasting mineralized and barren porphyries in the Zhongdian Arc, insights from biotite and apatite compositions and halogen fugacity. [PDF]
Pan Y +5 more
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Magnetic interaction in biotites and oxidised biotites
Physics and Chemistry of Minerals, 1987Mossbauer spectra of biotites (1) and (2) with relative iron concentrations ∼1:1·6 and of their oxidation products are recorded at 4 K in zero field and in applied fields up to 5 T. Magnetic susceptibility data are also reported. The results show that Fe III spins are in a ferromagnetic configuration in the c-plane in both biotites.
G. Longworth +3 more
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physica status solidi (b), 1962
AbstractStudies are made of Mössbauer absorption of Fe57 in biotite. The asymmetric double peak spectrum is explained by quadrupole splitting; the energy levels are influenced by the presence of OH‐groups in the octahedral surrounding of the Fe‐ions.
H. Pollak, M. De Coster, S. Amelinckx
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AbstractStudies are made of Mössbauer absorption of Fe57 in biotite. The asymmetric double peak spectrum is explained by quadrupole splitting; the energy levels are influenced by the presence of OH‐groups in the octahedral surrounding of the Fe‐ions.
H. Pollak, M. De Coster, S. Amelinckx
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Trimethylsilylation of Biotite
Clays and Clay Minerals, 1977AbstractOrganic solvent soluble organosilicate compounds retaining silicate backbone were obtained by the reaction between biotite and trimethylsilylating reagent. The soluble product which was formed at room temperature or at reflux temperature was a viscous liquid and was soluble in a wide range of organic solvents, but insoluble in water.
Kazuyuki Kuroda, Chuzo Kato
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Biotites and chlorites as interlayered biotite-chlorite crystal
Bulletin de Minéralogie, 1985En microscopie électronique à transmission et de haute résolution, il est fréquemment observé dans les biotites et les chlorites qu'il y a en fait mélange de feuillets élémentaires de biotite et de chlorite. D'après la terminologie courante, ces cristaux sont des interstratifications biotite-chlorite.
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