Lunar feldspathic breccia Achondrite Meteorite - 2.8 g - (1)

Northwest Africa 11474 (NWA 11474) (Northwest Africa) Purchased: 2017 Classification: Lunar meteorite (feldspathic breccia) History: Purchased by Dustin Dickens and Mendy Ouzillou from a Mauritanian meteorite dealer May 10, 2017. Physical characteristics: Many identical appearing pieces, no fusion crust. A saw cut reveals a fragmental breccia with numerous white feldspathic clasts set in a dark-grey ground mass. Petrography: (C. Agee, UNM) This meteorite consists of primarily feldspathic clasts and shock melt with lesser amounts of fragmental pyroxene and olivine. Geochemistry: (C. Agee and B. Ha, UNM) olivine Fa19. 3±0. 6, Fe/Mn-86±1, n-2; pigeonite Fs24. 8±0. 5Wo4. 3±0. 3, Fe/Mn-60±9, n-2; high Ca pyroxene Fs27. 4Wo34. 4, Fe/Mn-58, n-1; plagioclase An97. 8±0. 7Ab2. 0±0. 6Or0. 2±0. 1, n-6; Shock melt (20'm defocused electron beam, proxy for bulk meteorite composition) : Si. O2-44. 4±0. 8, Ti. O2-0. 21±0. 01, Al2O3-27. 5±1. 1, Cr2O3-0. 07±0. 02, Mg. O-5. 7±1. 4, Fe. O-4. 2±1. 3, Mn. O-0. 07±0. 02, Ca. O-16. 2±0. 5, Na2O-0. 42±0. 04, K2O-0. 01±0. 02 (all wt%) , Fe/Mn-63±1, Mg-70. 1±1. 1, n-3. Classification: Lunar feldspathic breccia Specimens: 20 g including a probe mount on deposit at UNM, Dustin Dickens and Mendy Ouzillou hold the main mass