Map and videos: The Perseid Meteor Showers and meteorite impacts in Nevada The most common type of asteroidal meteorites that we get on Earth are known as "ordinary chondrites". These are the ones that start with H, L, and LL. Chondrites are primitive meteorites, meaning that not much has happened to change them in the 4.5+ billion years since the solar system formed.
Aug. 1, 2013 - Reno Gazette-Journal