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These are 5-8 times bigger than our Small Lunar Meteorites!
Lunar Meteorites (aka: moon meteorites) are some of the rarest, most popular and sought-after meteorites on the market today! This is due to the total weight of lunar meteorites found being very low in comparison to other known meteorites. NWA 10823 is one of the latest, and most impressive meteorites that we have available.
Moon Meteorite Designation: NWA 10203
Physical characteristics: Twenty-seven identically appearing pieces reportedly found together. Irregular exterior, no fusion crust. A saw cut reveals a polymict breccia with numerous fragmental light and dark clasts. Petrography: (C. Agee, UNM) This polymict breccia has at least four distinct lithologies. 1) unbrecciated olivine gabbro with zoned clinopyroxene (~75%), acicular, plumose plagioclase (~15%), olivine (~5%), and minor titanomagnetite; 2) fragmental anorthositic gabbro breccia with ~75% plagioclase; 3) fragmental gabbroic breccia with approximately equal proportions of plagioclase, pyroxene and olivine; 4) shock melt veins and pools, some of which are vesicular. Accessory FeNi-metal, silica, ilmenite, troilite, chromite, and phosphate were observed in the fragmental breccias.
Geochemistry: (C. Agee and N. Muttik, UNM) Olivine gabbro: olivine Fa52.9.8±7.1, Fe/Mn=100±12, n=6; clinopyroxene Fs31.1±15.8Wo22.1±7.6, Fe/Mn=41±10, n=7; plagioclase An89.9±3.8Ab8.9±3.4Or1.1±0.8, n=3; anorthositic gabbro breccia: olivine Fa30.6±3.0, Fe/Mn=104±7, n=21; clinopyroxene Fs39.4±15.8Wo21.7±10.9, Fe/Mn=66±11, n=21; plagioclase An96.2±0.8Ab3.5±0.8Or0.2±0.1, n=6; gabbroic breccia: olivine Fa40.3±2.9, Fe/Mn=98±5, n=6; clinopyroxene Fs35.4±14.3Wo23.3±10.0, Fe/Mn=63±10, n=9; plagioclase An93.0±1.6Ab6.6±1.6Or0.4±0.1, n=4; Shock melt (10 μm defocused electron beam, proxy for bulk meteorite composition): SiO2=45.1±2.0, TiO2=0.54±0.38, Al2O3=24.3±6.2, Cr2O3=0.21±0.19, MgO=6.5±2.9, FeO=8.2±3.8, MnO=0.11±0.05, CaO=14.9±1.9, NiO=0.03±0.07, Na2O=0.49±0.13, K2O=0.10±0.03 (all wt%), n=40.
Classification: Lunar (polymict breccia)
Specimens: 24g including a probe mount on deposit at UNM.
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