Projects per year
Abstract
The Mont Dieu II meteorite (MD II) is a 435 kg iron meteorite containing cm-sized silicate inclusions. Based on the concentration of Ni, Ga, Ge and Ir in the metal host, MD II can be classified as a IIE non-magmatic iron. The silicate inclusions possess a chondritic mineralogy and thirteen relict chondrules occur throughout the inclusion. Major element analysis, oxygen isotopic analysis (<1727 O = 0.71 ± 0.02 ‰) and mean Fa and Fs molar contents (Fa15.7 ± 0.4 and Fs14.4 ± 0.5) indicate that MD II originated as an H-chondrite. Because of strong similarities with Netschaëvo IIE, MD II can be classified in the most primitive subgroup of the IIE sequence. 40Ar/3930 Ar ages of 4536 ± 59 Ma and 4494 ± 95 Ma obtained on pyroxene and plagioclase inclusions show that MD II belongs to the old (~4.5 Ga) 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 II sheds light on the nature of its formation process and on possible relationships to other groups of meteorites, as MD II represents a unique opportunity to study planetary differentiation processes in detail.
Original language | English |
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Pages (from-to) | 1173-1196 |
Number of pages | 24 |
Journal | Meteoritics & Planetary Science |
Volume | 50 |
Issue number | 7 |
DOIs | |
Publication status | Published - 1 Jul 2015 |
Keywords
- non-magmatic meteorite
- Inclusions
- Impact
- H ordinary chondrite
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SRP2: Strategic Research Programme: Tracing and Modelling of Past & Present Global Changes
Claeys, P., Elskens, M., Huybrechts, P., Gao, Y., Kervyn De Meerendre, M., Claeys, P., Baeyens, W. & Dehairs, F.
1/11/12 → 31/10/24
Project: Fundamental
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OZR2725: ULB-VUB Joint Research Group: Brussels Institute for Geochemical Techniques in Earth Sciences - BIGE
Claeys, P. & Mattielli, N.
5/12/14 → 4/12/22
Project: Fundamental
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DWTC288: Planets: Tracing the Transfer, Origin, Preservation and Evolution of their ReservoirS
Claeys, P., Goderis, S., Belza, J., Vanhaecke, F., Debaille, V., Dehant, V., Vandaele, A. C., Javaux, E. & Spohn, T.
1/10/12 → 30/09/17
Project: Fundamental
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OCCURRENCE OF SILICEOUS IMPACT MELT IN NETSCHAËVO IIE? A FIB-TEM STUDY.
Hamman, C., Van Roosbroek, N., Pittarello, L., Ansgar, G., Hecht, L., Debaille, V., Wirth, R. & Claeys, P., 2015, Special Issue: Meteoritics and Planetary Science, : 78th Annual Meeting of the Meteoritical Society 2015 July 27-31 Berkeley August 2015 Volume 50, Issue Supplement S1. S1 ed. Wiley, Vol. 50. 1 p. 5117Research output: Chapter in Book/Report/Conference proceeding › Conference paper
Open Access -
Can Raman Spectroscopy replace microprobe in OC chemical classification?
Pittarello, L., Baert, K., Debaille, V. & Claeys, P., Sep 2014, In: Meteoritics & Planetary Science. 49, s1, 1 p., 5086.Research output: Contribution to journal › Meeting abstract (Journal)
Open Access