Carbonaceous chondrites or C chondrites represent some of the most pristine matter known, and their chemical compositions match the chemistry of the Sun more closely than any other class of chondrites. Carbonaceous chondrites are primitive and undifferentiated meteorites that formed in oxygen-rich regions of the early solar system so that most of the metal is not found in its free form but as silicates, oxides, or sulfides. Most of them contain water or minerals that have been altered in the presence of water, and some of them contain larger amounts of carbon as well as organic compounds. However, there are different clans and groups of carbonaceous chondrites that formed on different parent bodies in different regions of the early solar nebula. The most important groups are designated as CI, CM, CV, CO, CR, CK, and CH chondrites. This meteorite isn't classificate and your provenance is the Northwest African, Sahara. A certificate of authenticity included. About the seller: I'm a geologist formed at the University of Granada (Spain) passionate about astrogeology and space.