from The Meteoritical Bulletin, No. 111
Northwest Africa 14741 (NWA 14741)
Lunar meteorite (basaltic breccia)
History: Purchased by Matthew Stream in November 2021 from a dealer in Agadir, Morocco.
Petrography: (A. Irving, UWS and P. Carpenter, WUSL) The studied small endcut is a breccia consisting of several mare basalt clasts (exhibiting intergranular and microgabbroic textures) set within a fine grained matrix. The matrix is highly microvesicular (with pervasive calcite infillings) and has a quenched melt rock texture surrounding numerous small mineral clasts. The larger lithic clasts are composed of olivine, zoned clinopyroxene and calcic plagioclase (apparently crystalline) together with accessory ilmenite, baddeleyite, merrillite (rare earth element-bearing), medium-Ti chromite, troilite and rare kamacite. Some secondary barite is present in the matrix.
Geochemistry: Olivine (Fa29.1-53.6, FeO/MnO = 95-106, N = 6), pigeonite (Fs24.3Wo13.9, FeO/MnO = 57), ferropigeonite (Fs68.9Wo21.2, FeO/MnO = 69), subcalcic augite (Fs16.9-22.8Wo35.8-34.9, FeO/MnO = 48-54, N = 2), plagioclase (An83.2-84.5Or0.5-0.3, N = 3).
Classification: Lunar (basaltic breccia, microvesicular).
Specimens: 3.82 g in the form of a polished endcut at UWB; remainder with Mr. M. Stream.
I have not studied Northwest Africa 14741.
Meteoritical Bulletin Database