[shareaholic app="share_buttons" id="5618116"]


Angrites are achondrites consisting largely of augite.  Augite is a pyroxene containing calcium and, in this case, some titanium and aluminum.  Olivine and plagioclase make up the remaining bulk.  Angrites are the oldest known igneous rocks and probably came from a large parent body.

Here are four photos each of three different angrites



NWA 2999 and a pairing


Sahara 99555

About the Author

John is a natural history enthusiast living in Oregon.