About 4–10% iron–nickel is found as a free metal, making these meteorites magnetic, but not as strongly as the H chondrites.

[citation needed] The most abundant minerals are olivine and hypersthene (an orthopyroxene), as well as iron–nickel and troilite.

Chromite, sodium-rich feldspar and calcium phosphates occur in minor amounts.

This indicates that the parent body was sizeable enough (greater than 100 kilometres (62 mi) in diameter) to experience strong heating.

This impact has been dated via cosmic ray exposure at around 468.0±0.3 million years ago.