Majorite formation from enstatite by experimental shock-loading |
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| Authors: | Manuel Jakubith Ulrich Hornemann |
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| Institution: | 1. Institut für Physikalische Chemie, Westfälische Wilhelms-Universität, Schlossplatz 4, D-4400 Münster Federal Republic of Germany;2. Fraunhofer Institut für Kurzzeitdynamik, Ernst Mach Institut, Abt. Ballistik, D-7858 Weil/Rhein Federal Republic of Germany |
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| Abstract: | Majorite has been observed for the first time after experimental shock-loading of enstatite (Bamle, Norway). The identification of this high pressure garnet has been carried out by X-ray photoelectron spectroscopy (XPS) and X-ray diffraction experiments, majorite formation was indicated by these techniques for the pressure range between ca. 35 and 50 GPa. This also proves formation of majorite by impact metamorphosis in the Coorara meteorite as well as terrestrial formation of that phase by the same process. |
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