Sample No.:	LAR 06638
Location:	Larkman Nunatak
Field No.:	19362
Dimensions (cm):	2.5 x 2.0 x 0.75
Weight (g):	5.293
Meteorite Type:	Lunar-Anorth. Breccia

Macroscopic Description: Kathleen McBride
The bottom exterior surface has black fusion crust, while the top has a lighter brown crust. Polygonal fractures are present. The gray and white matrix has a sharp line where matrix becomes black with white inclusions.

 

Thin Section (,2) Description: Tim McCoy, Lauren LaCroix and Linda Welzenbach
The section shows a groundmass of comminuted pyroxene, olivine and plagioclase with grain sizes up to 1 mm. Clasts up to 2 mm include basalts, granulites and anorthosites. One-half of the section exhibits a darkened matrix. Olivine is Fa_28-33, pyroxene ranges from Fs_27-39Wo_3-12 (Fe/Mn ~ 60), and plagioclase An_93-98. The meteorite is lunar, probably an anorthositic regolith breccia.

Thin Section Images

Plane-Polarized Light LAR 06638	Cross Polarized Light LAR 06638

Lab Images