Hydrous Mineralogy of carbonaceous chondrites from thermogravimetry analysis

Z. Yoldi-Martinez (1) , Pierre Beck (1) , German Montes-Hernandez (2) , R. Chiriac (3) , E. Quirico (1) , L. Bonal (1) , B. Schmitt (1) , F. Moynier (4, 5)

1 IPAG - Institut de Planétologie et d'Astrophysique de Grenoble
2 Minéralogie et environnements
3 LMI - Laboratoire des Multimatériaux et Interfaces
4 McDonnell Center for Space Sciences
5 Department of Earth and Planetary Sciences [St Louis]

Carbonaceous chondrites are considered as amongst the most primitive Solar System samples available. One of their primitive characteristics is their enrichment in volatile elements.This includes hydrogen, which is present in hydrated and hydroxylated minerals. More precisely, the mineralogy is expected to be dominated by phyllosilicates in the case of CM chondrites, and by Montmorillonite type clays in the case of CI. Here, in order to characterize and quantify the abundance of lowtemperature minerals in carbonaceous chondrites, we performed thermogravimetric analysis of matrix fragments of Tagish Lake, Murchison and Orgueil.

Domaines: Géomorphologie

Z. Yoldi-Martinez, Pierre Beck, German Montes-Hernandez, R. Chiriac, E. Quirico, et al.. Hydrous Mineralogy of carbonaceous chondrites from thermogravimetry analysis. Meteoritics and Planetary Science, 2011, 46 (Supplement s1), p.A258. ⟨10.1111/j.1945-5100.2011.01221.x⟩. ⟨insu-00681833⟩