Optical characters, particularly optic dispersion, of sodic- and subcalcic-amphiboles in Sanbagawa schists
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Accession number;04A0150040
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| Title;Optical characters, particularly optic dispersion, of sodic- and subcalcic-amphiboles in Sanbagawa schists |
| Author;
ENAMI M
(Kanazawa Univ., Kanazawa, Jpn)
BANNO S
(Kyoto Univ. Kyoto, Jpn)
ENAMI M
(Nagoya Univ. Nagoya, Jpn)
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Journal Title;J Mineral Petrol Sci
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Journal Code:G0150B
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ISSN:1345-6296
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VOL.98;NO.5;PAGE.194-198(2003)
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| Figure&Table&Reference;FIG.1, TBL.2, REF.16 |
| Pub. Country;Japan |
| Language;English |
| Abstract;Na and Na-Ca amphiboles often show anomaly of optical extinction. The dependence of 2Vx and extinction angle on the wavelength of light (Cd, Na, and Hg lamps) has been measured and described along with the chemical composition of amphiboles. The maximum angle of extinction is 43.DEG. and the values of 20 to 40.DEG. is common in amphiboles of quartz schists in the garnet and albite-biotite zones of the Sanbagawa metamorphic belt. (author abst.) |
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