What is "angrite"

n. An achondrite consisting mostly of augite with some olivine and troilite

Angrites are a rare group of achondrites consisting mostly of the mineral augite with some olivine, anorthite and troilite. The group is named for the Angra dos Reis meteorite.

Angrites are basaltic rocks, often having porosity, with vesicle diameters of up to .

They are the oldest igneous rocks, with crystallization ages of around 4.55 billion years.