Origin and implications of troilite-orthopyroxene intergrowths in the brecciated diogenite Northwest Africa 7183
| Autor: | Li-Hui Chen, Ai-Cheng Zhang, Hisayoshi Yurimoto, Yi-Fan Bu, Rucheng Wang, Xiao-Lei Wang, De-Hong Du, Run-Lian Pang, Jian-Feng Gao, Naoya Sakamoto |
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| Rok vydání: | 2018 |
| Předmět: |
Diogenite
Olivine 010504 meteorology & atmospheric sciences Rare-earth element Geochemistry Mineral chemistry engineering.material 010502 geochemistry & geophysics 01 natural sciences Troilite Petrography Geochemistry and Petrology engineering Geology 0105 earth and related environmental sciences Petrogenesis |
| Zdroj: | Geochimica et Cosmochimica Acta. 220:125-145 |
| ISSN: | 0016-7037 |
| Popis: | Troilite-orthopyroxene intergrowths are present as a common material in the brecciated diogenite Northwest Africa (NWA) 7183. In this study, we report on the petrographic, mineralogical, and rare earth element abundances of the troilite-orthopyroxene intergrowths to constrain their origin and assess their implications for the diverse petrogenesis of diogenites. Two groups of troilite-orthopyroxene intergrowths with various grain sizes and mineral chemistry have been observed in NWA 7183. One group of intergrowths contains fine-grained ( |
| Databáze: | OpenAIRE |
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