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Tunnelling in plagioclase feldspars
Journal of Physics D: Applied Physics, 2007Electrons trapped in a certain unidentified defect in feldspars can escape it by tunnelling to a nearby site. We show that, for plagioclase feldspars with up to 5% Ca cation (peristerites), the tunnelling rate is directly related to the Ca content. Any explanation must take into account the two-phase nature of such crystals, and three different models ...
D J Huntley, M R Baril, S Haidar
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The structures of the plagioclase felspars: VI. Natural intermediate plagioclases
Mineralogical Magazine and Journal of the Mineralogical Society, 1956SummarySpecimens from some forty different localities over the composition range from about 20 % An to about 70 % An have been examined by X-ray single-crystal methods. The majority of these specimens show the normal intermediate plagioclase pattern characterized by weak pairs of subsidiary layer-lines of variable separation. It has been found that the
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Experimental Deformation Of Plagioclases
1970Strength properties and spatial orientation of deformation structures are de-cribed for 11 plagioclases, An2–An95, deformed in compression tests at 25° — 800°C, 5–10 kb confining pressure. At 800°C 10 kb, all single crystals oriented favorably for albite and pericline twin gliding have yield strengths of about 2 kb regardless of composition or ...
I. Y. Borg, H. C. Heard
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Mineralogical Magazine and Journal of the Mineralogical Society, 1934
During the examination of the basalts of Calciferous Sandstone age which are mapped on the one-inch Sheet 23 (Hamilton, Lanarkshire) Scotland, the peculiarities of zoning exhibited by the porphyritic felspar were studied in some detail. As only a summary of the details is possible in the memoir explanatory of the geology of this Sheet, the description ...
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During the examination of the basalts of Calciferous Sandstone age which are mapped on the one-inch Sheet 23 (Hamilton, Lanarkshire) Scotland, the peculiarities of zoning exhibited by the porphyritic felspar were studied in some detail. As only a summary of the details is possible in the memoir explanatory of the geology of this Sheet, the description ...
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Plagioclase-saturated hygrothermobarometry and plagioclase-melt equilibria using machine learning
Goldschmidt2023 abstracts, 2023Kyra Cutler +2 more
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Lunar Anorthosites: Plagioclase Crystallization
Science, 1971H, Wakita, R A, Schmitt
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