A Study on the Chromian Tremolite from Guleman, Elazığ
Chemical composition, optical properties, D.T.A. curve, unit cell dimensions and indexed powder diffraction pattern of the chromium-rich tremolite from Guleman District are given. The chemical composition of this mineral is much more close to the chemical composition of hornblende. It contains 2.97...
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| Format: | Article |
| Language: | English |
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General Directorate of Mineral Research and Exploration
1975-01-01
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| Series: | Bulletin of the Mineral Research and Exploration |
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| Online Access: | http://dergipark.gov.tr/bulletinofmre/issue/3910/52118?publisher=mta |
| Summary: | Chemical composition, optical properties, D.T.A. curve, unit cell dimensions and indexed powder diffraction pattern of the chromium-rich tremolite from Guleman District are given. The chemical composition of this mineral is much more close to the chemical composition of hornblende. It contains 2.97 % Cr2O3 . Optical properties are obtained as: g=1.632, b=1.623, a= 1.615 all + 0.002 2V=90° ZlC=33°. Unit cell dimensions are: a=9.819 A°, b= 18.084 A°, c=5.200 A°, 104°40' V=893.44 A°3 c Dimension of this mineral is smaller than those found in tremolite and other hornblendes. Exothermic reaction at 830°C found for tremolite is not seen at D.T.A. curve of chromian tremolite from Guleman. |
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| ISSN: | 0026-4563 2651-3048 |