from The Meteoritical Bulletin, No. 111
Northwest Africa 14836 (NWA 14836)
Lunar meteorite (feldspathic breccia)
History: Purchased by Chalom Malka in 2021 by Naji C. in Morocco.
Physical Characteristics: Five pieces with slightly weathered fusion crust.
Petrography: (D. Sheikh, Cascadia) Sample is a breccia composed of mm-sized (up to 5 mm) sub-rounded lithic clasts (mostly anorthitic) set within a fine-grained matrix containing areas of melt rock (some having vesicles). Accessory phases include Fe-Ni metal, troilite, and SiO2 glass.
Geochemistry: Olivine (Fa30.8±4.0, range Fa21.4-36.4, FeO/MnO=88±14, n=20), Low-Ca Pyroxene (Fs20.9±4.9Wo4.1±0.8, range Fs13.8-25.1Wo2.9-4.9, FeO/MnO=55±15, n=4), Pigeonite (Fs27.3±3.4Wo9.4±3.8, range Fs22.8-32.0Wo5.6-14.9, FeO/MnO=64±12, n=5), Augite (Fs21.1Wo29.6, FeO/MnO=70, n=1), Calcic Plagioclase (An96.5±0.6, range An95.4-97.4, n=7).
Classification: Lunar (feldspathic breccia, containing melt rock areas).
Specimens: 18.1 grams at Cascadia, main mass with Chalom Malka.
I have not studied Northwest Africa 14836.
Meteoritical Bulletin Database