CO Carbonaceous Chondrites

CO Carbonaceous Chondrites are a well-defined group of Carbonaceous Chondrite meteorites, known for their small chondrules and relatively low levels of alteration. The ‘CO’ designation comes from Ornans, the type specimen of the group. Formed over 4.5 billion years ago, CO Chondrites are considered among the more thermally processed Carbonaceous meteorites, having experienced mild heating while still preserving many primitive features from the early solar system.

CO Carbonaceous Chondrites typically display a dark matrix filled with very small, well-defined chondrules, often less than a millimeter in size. They contain limited metal and a range of silicate minerals, giving them a fine-grained and uniform appearance when cut and polished. Despite some thermal metamorphism, their structure remains highly informative, preserving details of early solar system processes.

Studying CO Carbonaceous Chondrites provides valuable insight into the balance between primitive composition and thermal alteration in early asteroid material. They help scientists understand how heat affected Carbonaceous parent bodies without completely erasing their original features. For collectors, CO Chondrites are highly desirable due to their well-defined classification, fine textures, and scientific importance. Each specimen represents a detailed and well-preserved example of early solar system material.