A single stone weighing 368 g was found in the Sahara Desert of Northwest Africa. The meteorite was subsequently purchased by collector S. Ralew, and a sample was submitted for analysis to the Museum für Naturkunde, Humboldt University, Berlin, (A. Greshake). Northwest Africa 2889 was classified as an L/LL3–6 chondrite with a shock stage of S4 and a weathering grade of W1. The average fayalite content in NWA 2889 (Fa27.5 mol%) is in the range of the LL-group chondrites (27.0–33.0 mol%), although certain olivines span a broader range (3.7–36.1 mol%). There is also a range in the ferrosilite content (2.0–20.9 mol%), averaging Fs20.8 mol%, which is within the range of the L-group chondrites (18.7–21.8 mol%).
The photo of NWA 2889 shown above is a 0.61 g partial slice, which is composed entirely of the unequilibrated component. The photo below shows a portion of this meteorite consisting of both unequilibrated and equilibrated components.
