Noble Gases in the Very Primitive CM Chondrites Asuka 12085 and 12236 — Filling the Gap
Pacnik H. Eckart L. M. Krietsch D. Maden C. Busemann H. *
PDF LPSC 2022 abstract [#1987]
“Noble gases confirm that A-12085 and 12236 are very primitive CMs; the accreted matrix contains Ar-rich grains that are destroyed by very mild aqueous alteration.”