NWA 2990 is a Martian meteorite classified as a shergottite, representing volcanic processes on the surface of Mars.
As part of the most abundant group of Martian meteorites, it provides valuable insight into the magmatic and geological evolution of the Martian crust.
Look at the NWA 10170 (three stones of 252g, 57.6g and 6.8g pairing of the NWA 2990, the NWA 5960 and NWA 6234).