Name: Larkman Nunatak 04316 This is an OFFICIAL meteorite name. Abbreviation: LAR 04316 Observed fall: No Year found: 2003 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass: 1163 g
Macroscopic Description: Kathleen McBride
Very little fusion crust is left on the exterior surface. The three areas of remaining crust are brown/black in color and have the characteristic "bubbly" appearance. There are some areas of yellow crusty material. The interior has a light gray matrix with large, angular white and gray clasts. Smaller clasts are usually white. There is a large 2.5 cm black clast with rust located in the center of the break. The interior contains multiple dark gray to almost black angular clasts with basaltic texture.
Thin Section (,3 ,4 ,7) Description: Tim McCoy
Section ,3 samples a comminuted matrix of essentially FeO-free enstatite (Fs0-1) and diopside (Fs1Wo45) with grain sizes reaching 3 mm and rarer metal, phosphide, troilite, daubreelite and alabandite. This material makes up the bulk of the meteorite. Two clasts described in the macroscopic description, and apparently in contact in the piece, are an aubrite basalt vitrophyre of the type recently described by Fogel (GCA 69, 1633-1648) composed of enstatite (Fs2) and forsterite (Fa2) in a matrix of feldspathic glass and a metal-sulfide quench-textured clast with a single 0.5 mm alabandite grain. The meteorite is an aubrite.