Erg Chech 002 (EC 002) is an ancient andesite meteorite discovered in the Erg Chech region of the Sahara Desert in Algeria. The fall is believed to be fragments of a achondritic protoplanet that is over 4.566 billion years old, and is believed to be the oldest known volcanic rock on Earth. A specimen of Erg Chech 002 is held at the Maine Mineral and Gem Museum.