Results 91 to 100 of about 1,340 (151)

Garnet-biotite thermometry revisited: The effect of AlVI and Ti in biotite

European Journal of Mineralogy, 1994
Ulrich Kleemann, Jürgen Reinhardt
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Sorption of biotite

, 2022
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Nomenclature of The Micas and “Biotite”

Journal of The Gemmological Society of Japan
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Magnetic interaction in biotites and oxidised biotites

Physics and Chemistry of Minerals, 1987
Mossbauer 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, M. G. Townsend, R. Provencher, H. Kodama   +3 more
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Mössbauer effect in biotite

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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Trimethylsilylation of Biotite

Clays and Clay Minerals, 1977
AbstractOrganic 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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Interlayered biotite-kaolin and other altered biotites, and their relevance to the biotite isograd in eastern Otago, New Zealand

Mineralogical Magazine, 1982
AbstractGreen biotite-like material occurring in Haast Schist at Brighton, eastern Otago, consists of biotite and a kaolin-group mineral interlayered on a 1 μm scale. Electron probe analyses of composite grains show K2O contents of 4.4 to 8.5 wt.%, in part reflecting the kaolin content, and in part, leaching of K+ ions.
D. Craw, D. S. Coombs, Y. Kawachi
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Biotites and chlorites as interlayered biotite-chlorite crystal

Bulletin de Minéralogie, 1985
En 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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Experimental Conversion of Biotite to Hydrobiotite

Nature, 1970
THE weathering of biotite in the soil frequently leads to replacement of interlayer K+ by hydrated Mg2+, with accompanying structural expansion along the c crystallographic axis from 10 to 14 A (ref. 1). Usually, the 14 A vermiculite phase becomes established without the development of well-defined intermediate spacings on the X-ray diffraction pattern.
V C, Farmer, M J, Wilson
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Magnetism of biotite crystals

Earth and Planetary Science Letters, 2006
Abstract We report Mossbauer spectra, magnetic hysteresis, acquisition and demagnetization of isothermal remanent magnetization (IRM), and low-temperature IRM warming curves of biotite crystals, as well as a summary of domain observations on magnetic extracts.
David J. Dunlop, Özden Özdemir, Denis G. Rancourt   +2 more
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