Replication Data for: Hydrogen isotopic composition of CI- and CM-like clasts from meteorite breccias – Sampling unknown sources of carbonaceous chondrite materials ...

• Main Authors: Patzek, Markus, Hoppe, Peter, Bischoff, Addi, Visser, Robbin, John, Timm
• Format: Dataset
• Language: unknown
• Published: TRR170-DB 2021
• Subjects: Tagish; Tagish Lake
• Online Access: https://dx.doi.org/10.35003/fy0b6e; https://planetary-data-portal.org/citation?persistentId=doi:10.35003/FY0B6E

Volatile-rich, CI- and CM-like clasts occur in different brecciated achondrite and chondrite groups. The CI-like clasts in HEDs, polymict ureilites, as well as ordinary, CR, and CB chondrites have a similar mineralogy, indicating a similar alteration history. However, when viewed in detail, their mineral chemistry shows some minor differences between the clasts from different meteorite groups. For CM-like clasts found in HED meteorites, the clasts are, based on their mineralogy, clearly fragments of CM chondrites. To be able to decipher whether CI- (or CM-)like clasts from different meteorite groups are related to certain meteorite classes known to contain volatiles, we obtained D/H ratios of several clasts from the meteorite groups mentioned above and compared them with those of CI and CM chondrites as well as to unique carbonaceous chondrites such as Bells, Essebi, and Tagish Lake. Considering the δD-values, CM-like clasts in HEDs span a similar range compared to bulk values of CM chondrites, further ...