The reflectance spectra of CV–CK carbonaceous chondrites from the near-infrared to the visible

ABSTRACT Carbonaceous chondrite meteorites are so far the only available samples representing carbon-rich asteroids and in order to allow future comparison with returned by missions such as Hayabusa 2 OSIRIS-Rex, it is important understand their physical properties. Future characterization of asteroid primitive classes, some them targeted sample-return missions, requires a better understanding mineralogy, consequences exposure space weathering, how both affect reflectance behaviour these objects. In this paper, spectra two chemically related carbonaceous chondrites groups, precisely Vigrano (CVs) Karoonda (CKs), measured compared. The sample suite includes polished sections exhibiting different petrologic types: from 3 (very low degree thermal metamorphism) 5 (high metamorphism). We found that reflective properties Cg class point towards common chondritic reservoir which CV–CK collisionally evolved. scenario, CV CK could be originated 221 Eos family, but because its collisional disruption, groups evolved separately, experiencing stages metamorphism, annealing, weathering.