The formation of IIE iron meteorites investigated by the chondrule-bearing Mont Dieu meteorite
A 435kg piece of the Mont Dieu iron meteorite (MD) contains cm-sized silicate inclusions. Based on the concentration of Ni, Ga, Ge, and Ir (8.59±0.32 wt%, 25.4±0.9ppm, 61±2ppm, 7.1±0.4ppm, respectively) in the metal host, this piece can be classified as a IIE nonmagmatic iron. The silicate inclusion...
| Main Authors: | , , , , , , , , , |
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| Format: | Journal Article |
| Published: |
John Wiley & Sons, Inc.
2015
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| Online Access: | http://hdl.handle.net/20.500.11937/59603 |
| _version_ | 1848760524635897856 |
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| author | Van Roosbroek, N. Debaille, V. Pittarello, L. Goderis, S. Humayun, M. Hecht, L. Jourdan, Fred Spicuzza, M. Vanhaecke, F. Claeys, P. |
| author_facet | Van Roosbroek, N. Debaille, V. Pittarello, L. Goderis, S. Humayun, M. Hecht, L. Jourdan, Fred Spicuzza, M. Vanhaecke, F. Claeys, P. |
| author_sort | Van Roosbroek, N. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | A 435kg piece of the Mont Dieu iron meteorite (MD) contains cm-sized silicate inclusions. Based on the concentration of Ni, Ga, Ge, and Ir (8.59±0.32 wt%, 25.4±0.9ppm, 61±2ppm, 7.1±0.4ppm, respectively) in the metal host, this piece can be classified as a IIE nonmagmatic iron. The silicate inclusions possess a chondritic mineralogy and relict chondrules occur throughout the inclusions. Major element analysis, oxygen isotopic analysis (? 17 O=0.71±0.02‰), and mean Fa and Fs molar contents (Fa 15.7±0.4 and Fs 14.4±0.5 ) indicate that MD originated as an H chondrite. Because of strong similarities with Netschaëvo IIE, MD can be classified in the most primitive subgroup of the IIE sequence. 40 Ar/ 39 Ar ages of 4536±59Ma and 4494±95Ma obtained on pyroxene and plagioclase inclusions show that MD belongs to the old (~4.5Ga) group of IIE iron meteorites and that it has not been perturbed by any subsequent heating event following its formation. The primitive character of MD sheds light on the nature of its formation process, its thermal history, and the evolution of its parent body. |
| first_indexed | 2025-11-14T10:17:09Z |
| format | Journal Article |
| id | curtin-20.500.11937-59603 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:17:09Z |
| publishDate | 2015 |
| publisher | John Wiley & Sons, Inc. |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-596032018-03-29T09:09:37Z The formation of IIE iron meteorites investigated by the chondrule-bearing Mont Dieu meteorite Van Roosbroek, N. Debaille, V. Pittarello, L. Goderis, S. Humayun, M. Hecht, L. Jourdan, Fred Spicuzza, M. Vanhaecke, F. Claeys, P. A 435kg piece of the Mont Dieu iron meteorite (MD) contains cm-sized silicate inclusions. Based on the concentration of Ni, Ga, Ge, and Ir (8.59±0.32 wt%, 25.4±0.9ppm, 61±2ppm, 7.1±0.4ppm, respectively) in the metal host, this piece can be classified as a IIE nonmagmatic iron. The silicate inclusions possess a chondritic mineralogy and relict chondrules occur throughout the inclusions. Major element analysis, oxygen isotopic analysis (? 17 O=0.71±0.02‰), and mean Fa and Fs molar contents (Fa 15.7±0.4 and Fs 14.4±0.5 ) indicate that MD originated as an H chondrite. Because of strong similarities with Netschaëvo IIE, MD can be classified in the most primitive subgroup of the IIE sequence. 40 Ar/ 39 Ar ages of 4536±59Ma and 4494±95Ma obtained on pyroxene and plagioclase inclusions show that MD belongs to the old (~4.5Ga) group of IIE iron meteorites and that it has not been perturbed by any subsequent heating event following its formation. The primitive character of MD sheds light on the nature of its formation process, its thermal history, and the evolution of its parent body. 2015 Journal Article http://hdl.handle.net/20.500.11937/59603 10.1111/maps.12463 John Wiley & Sons, Inc. restricted |
| spellingShingle | Van Roosbroek, N. Debaille, V. Pittarello, L. Goderis, S. Humayun, M. Hecht, L. Jourdan, Fred Spicuzza, M. Vanhaecke, F. Claeys, P. The formation of IIE iron meteorites investigated by the chondrule-bearing Mont Dieu meteorite |
| title | The formation of IIE iron meteorites investigated by the chondrule-bearing Mont Dieu meteorite |
| title_full | The formation of IIE iron meteorites investigated by the chondrule-bearing Mont Dieu meteorite |
| title_fullStr | The formation of IIE iron meteorites investigated by the chondrule-bearing Mont Dieu meteorite |
| title_full_unstemmed | The formation of IIE iron meteorites investigated by the chondrule-bearing Mont Dieu meteorite |
| title_short | The formation of IIE iron meteorites investigated by the chondrule-bearing Mont Dieu meteorite |
| title_sort | formation of iie iron meteorites investigated by the chondrule-bearing mont dieu meteorite |
| url | http://hdl.handle.net/20.500.11937/59603 |