Lunar Meteorite: Northwest Africa 16881
from The Meteoritical Bulletin, No. 113 Northwest Africa 16881 (NWA 16881)(Northwestern Africa) Lunar meteorite History: Purchased by Jose Garcia and Ari Machiz in May 2024 from a dealer in Laayoune, Morocco, and donated to MCM. Petrography: (A. Irving, UWS, and P. Carpenter, WUSL) Breccia composed of angular mineral clasts of calcic plagioclase and relatively abundant mafic silicates (olivine, low-Ca pyroxene, pigeonite, subcalcic augite, augite) plus accessory ilmenite, troilite, medium-Ti chromite and rare baddeleyite in a fine grained matrix. Geochemistry: Olivine (Fa33.0-48.6, FeO/MnO = 77-91, N = 2), low-Ca pyroxene (Fs19.5Wo4.6, FeO/MnO = 45), pigeonite (Fs28.8-71.2Wo6.4-19.8, FeO/MnO = 45-69, N = 4), subcalcic augite (Fs28.8-49.9Wo31.8-23., FeO/MnO = 44-66, N = 2), augite (Fs8.6Wo43.3, FeO/MnO = 38), fayalite (Fa91.1, FeO/MnO = 80), plagioclase (An85.7-97.5Or0.3-0.0, N = 4). Classification: Lunar (polymict breccia). This meteorite contains crystalline mineral debris evidently derived from both feldspathic and mare basaltic lithologies. Specimens: 30.5 g including one polished mount at UWB; the main mass is held by MCM. |
Randy Says… I have not studied Northwest Africa 16881. |
More InformationMeteoritical Bulletin Database NWA 16881 |