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| CI chondrite | |
|---|---|
| — Group — | |
| Type | Chondrite |
| Structural classification | ? |
| Class | Carbonaceous chondrite |
| Subgroups |
|
| Parent body | Unknown |
| Composition | ? |
| Total known specimens | Debated: 5–10+ |
| TKW | 17 kilograms (37 lb) |
| Alternative names | CI chondrites, C1 chondrites, CI chondrite meteorites, C1 chondrite meteorites |
CI chondrites, also called C1 chondrites or Ivuna-type carbonaceous chondrites, are a group of rare carbonaceous chondrite, a type of stony meteorite. They are named after the Ivuna meteorite, the type specimen. CI chondrites have been recovered in France, Canada, India, and Tanzania. Their overall chemical composition closely resembles the elemental composition of the Sun (and hence the whole Solar System), more so than any other type of meteorite.
CI chondrites are rich in volatiles- water, organics, and other light elements/compounds. They have more water than comet 67P/Churyumov–Gerasimenko.[1][2] Some specimens which are classified as borderline CIs found in Antarctica are sometimes referred to as a separate group, the CY chondrites.
- ^ Rickman, H. (2017). Origin and Evolution of Comets: Ten Years after the Nice Model and One Year after Rosetta. World Scientific. ISBN 978-981-3222-57-1.
- ^ Cite error: The named reference
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