CBb Meteorite Classification

Class Description

The CBb classification refers to a specific type of carbonaceous chondrite within the CB (Bencubbin-like) group, distinguished by their solar-like magnesium-to-silicon ratio and distinct oxygen isotope composition. This subtype, CBb, is characterized by the presence of smaller chondrules (ranging from 0.2 to 1 mm), abundant metal content making up around 70% of its volume, and the inclusion of some refractory materials, setting it apart from other carbonaceous chondrites.

CBb Meteorite Examples

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