MICROSTRUCTURE AND PHASE TRANSITION OF CALCIC ANORTHOCLASE FROM MOUNT EREBUS, ANTARCTICA
Monoclinic-triclinic inversion and exsolution phenomena in calcic anorthoclase were investigated by means of high temperature X-ray diffraction, X-ray microprobe analysis and analytical transmission electron microscope on natural calcic anorthoclase from Mout Erebus, Antarctica. Mt. Erebus anorthocl...
Main Authors: | , , , , , , , , |
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Format: | Report |
Language: | English |
Published: |
Mineralogical Institute, Faculty of Science, University of Tokyo
1987
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Subjects: | |
Online Access: | https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2533 http://id.nii.ac.jp/1291/00002533/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2533&item_no=1&attribute_id=18&file_no=1 |
Summary: | Monoclinic-triclinic inversion and exsolution phenomena in calcic anorthoclase were investigated by means of high temperature X-ray diffraction, X-ray microprobe analysis and analytical transmission electron microscope on natural calcic anorthoclase from Mout Erebus, Antarctica. Mt. Erebus anorthoclase is the most calcic one-phase anorthoclase which was twinned according to the albite-and pericline-laws in the course of monoclinic-triclinic inversion, whose temperature was measured to be 750℃. The occurrence of the one-phase anorthoclase was closely related with the eruption mechanism of Mt. Erebus. |
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