The Fe/S ratio of pyrrhotite group sulfides in chondrites: An indicator of oxidation and implications for return samples from asteroids Ryugu and Bennu.

ndrites (all contain troilite); (4) despite the CV3 OxA , CV3 OxB , and CV3 Red chondrites having significant differences in their aqueous and thermal histories (e.g., Weisberg et al., 2006 , Busemann et al., 2007 ; Bonal et al., 2020 ), all contain troilite; and (5) the CR chondrites do not follow an overall trend between pyrrhotite Fe/S ratio and aqueous alteration ( Table 4 and Fig. 4 ).

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