LL chondrites

LL chondrites have the lowest free metal and sulfide content (less than 7% by weight). As for the L chondrites, hypersthene is their dominant form of pyroxene. To distinguish the LLs from the L chondrites, LL chondrites are sometimes referred to as amphoterites. The matrix of LL chondrites displays very little visible iron. Alteration grades for amphoterites range from 3 to 6. Most LL are of the LL6 type.

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