Carbonaceous chondrites or C chondrites are a class of chondritic meteorites comprising at least 8 known groups and many ungrouped meteorites. They include some of the most primitive known meteorites.

carbonaceous chondrite, a diverse class of chondrite s (one of the two divisions of stony meteorite s), important because of the insights they provide into the early history of the solar system. They comprise about 3 percent of all meteorite s collected after being seen to fall to Earth.

Two meteorites that were collected in Antarctica in 1992 and 1995 were found to be abundant in amino acids, which are present at concentrations of 180 and 249 ppm (carbonaceous chondrites normally contain concentrations of 15 ppm or less).

Jan 8, 2021 · Carbonaceous chondritic meteorites are primordial Solar System materials and a source of water delivery to Earth. Fluid flow on the parent bodies of these meteorites is known to have occurred very early in Solar System history (first <4 million years).

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.

CM chondrites are a group of chondritic meteorites which resemble their type specimen, the Mighei meteorite. The CM is the most commonly recovered group of the 'carbonaceous chondrite' class of meteorites, though all are rarer in collections than ordinary chondrites.

Carbonaceous Chondrite refers to a type of meteorite that is classified based on its composition, elemental ratios, bulk composition, and oxygen isotopic ratios. It includes various classes that differ in composition, mineralogy, and petrology, and can be further divided into petrologic types based on evidence of aqueous alteration or thermal ...

Classification: Carbonaceous chondrite (C3.00-ungrouped). This meteorite is distinct from CM2 chondrites for its larger chondrule size and only incipient aqueous alteration. Type 3.00 is based on the non-detection of phyllosilicates by XRD and microprobe total in the matrix higher than usually measured in type 2 chondrites (see e.g., Ebert et ...

Discover the origins, types, and unique features of carbonaceous chondrites—rare meteorites rich in organic compounds, water, and insights into the early solar system.

Fifteen groups of chondrites displaying an extraordinary diversity in their mineralogical and textural properties are known today, of which the carbon-rich meteorites, referred to as carbonaceous chondrites, are the most primitive.