Zinc isotopic composition of iron meteorites: Absence of isotopic anomalies and origin of the volatile element depletion

Heng Chen (1, 2) , Bach Mai Nguyen (2, 2) , Frédéric Moynier (2, 2, 3)

1 Department of Earth and Planetary Sciences [St Louis]
2 WUSTL - Washington University in Saint Louis
3 IPGP (UMR_7154) - Institut de Physique du Globe de Paris

High-precision Zn isotopic compositions measured by MC-ICP-MS are documented for 32 iron meteorites from various fractionally crystallized and silicate-bearing groups. The Zn-66 values range from -0.59 parts per thousand up to +5.61 parts per thousand with most samples being slightly enriched in the heavier isotopes compared with carbonaceous chondrites (0

Mots clés: KeyWords Plus:CHEMICAL CLASSIFICATION; CORE FORMATION; GROUP-IIIAB; HF-W; FRACTIONATION; CU; COPPER; IAB; IIE; ZN

Domaines: Planète et Univers [physics]

Heng Chen, Bach Mai Nguyen, Frédéric Moynier. Zinc isotopic composition of iron meteorites: Absence of isotopic anomalies and origin of the volatile element depletion. Meteoritics and Planetary Science, 2013, 48 (12), pp.2441-2450. ⟨10.1111/maps.12229⟩. ⟨insu-02918073⟩