R5: Extraterrestrial materials

[R5-03] Reinvestigation of CM-CO clan classification

*Makoto Kimura¹ (1. National Institute of Polar Research)

Keywords:CM chondrite, CO chondrite

The characteristic features of CM and CO chondrites are compared, based on the study of primitive CM-related and CO chondrites. The classification criteria and the genetic relationships between CM-CO clan chondrites are discussed.