Experimental synthesis of isochemical kelyphite — a preliminary report
| العنوان: | Experimental synthesis of isochemical kelyphite — a preliminary report |
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| المؤلفون: | Shugo Ohi, Masaaki Obata, Akira Miyake |
| المصدر: | Journal of Mineralogical and Petrological Sciences. 109:91-96 |
| بيانات النشر: | Japan Association of Mineralogical Sciences, 2014. |
| سنة النشر: | 2014 |
| مصطلحات موضوعية: | Materials science, Mineral, Olivine, Spinel, Analytical chemistry, Mineralogy, Geology, Electron microprobe, engineering.material, Geophysics, Symplectite, engineering, Plagioclase, Metasomatism, Electron backscatter diffraction |
| الوصف: | We observed the breakdown of natural garnet in a high–pressure experiment (0.85 GPa and 1100 °C for 2 days) using a piston–cylinder apparatus. Two different types of kelyphites were formed: (1) isochemical and (2) metasomatic. The isochemical kelyphite was composed of orthopyroxene + spinel + plagioclase, whereas the metasomatic one, having a composition altered significantly from the original garnet, was composed of olivine + spinel + plagioclase. These synthetic kelyphites were studied and characterized using EPMA, SEM, EBSD, and TEM and were shown to have many microstructural features as well as their mineral assemblages in common with observed natural kelyphites. The kelyphitization was very heterogeneous and local and was apparently controlled by grain surfaces and intra–grain cracks in garnet. The metasomatic kelyphite apparently formed by a reaction between garnet and aqueous fluids that may have been introduced from outside the platinum capsule through holes accidentally made in the capsule. |
| تدمد: | 1349-3825 1345-6296 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::2d49705ed9ea86e9c5d59c276d4422d2 https://doi.org/10.2465/jmps.131022a |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi...........2d49705ed9ea86e9c5d59c276d4422d2 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 13493825 13456296 |
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