![]() |
||
|
Northwest Africa 10643 | |||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Basic information | Name: Northwest Africa 10643 This is an OFFICIAL meteorite name. Abbreviation: NWA 10643 Observed fall: No Year found: 2016 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 214 approved meteorites classified as Lunar (feldsp. breccia). [show all] Search for other: Lunar meteorites | ||||||||||||||||||||||||||||||
Comments: | Approved 15 May 2016 | ||||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 105:
Northwest Africa 10643 (NWA 10643) (Northwest Africa) Purchased: 2016 Classification: Lunar meteorite (feldspathic breccia) History: Purchased from Jaouad Chaoui in Marrakesh, Morocco, December 2015; reportedly found in Mauritania. Physical characteristics: Single stone, irregular exterior, no fusion crust. A saw cut reveals feldspathic clasts (up to 1 cm) set in a dark-gray groundmass. Petrography: (C. Agee, UNM) This is a highly feldspathic breccia with primarily magnesian olivine (Fa20) and pyroxene fragments scattered throughout. Minor amounts of more iron-rich olivine (Fa41) and pigeonite (Fs66Wo23) were detected. Vesicular shock melt veins and pockets are also present. Geochemistry: (C. Agee and M. Spilde, UNM) Olivine Fa20.0±2.0, Fe/Mn=84±6, n=12; pigeonite Fs33.5±8.9Wo9.4±8.6, Fe/Mn=63±11, n=10; augite Fs22.9±2.3Wo40.1±0.8, Fe/Mn=58±5, n=2; plagioclase An97.0±0.5, n=5; Shock melt (20 μm defocused electron beam, proxy for bulk meteorite composition): SiO2=44.5±0.7, TiO2=0.15±0.07, Al2O3=30.7±2.7, Cr2O3=0.06±0.04, MgO=5.2±1.9, FeO=2.9±1.1, MnO=0.04±0.00, CaO=17.0±1.0, NiO=0.01±0.01, Na2O=0.37±0.02, K2O=0.03±0.01 (all wt%), n=3. Classification: Lunar (feldspathic breccia) Specimens: 8.8 g including a probe mount on deposit at UNM; Jean Redelsperger holds the main mass. | ||||||||||||||||||||||||||||||
Data from: MB105 Table 0 Line 0: |
|
||||||||||||||||||||||||||||||
Institutions and collections |
UNM: Institute of Meteoritics
MSC03 2050
University of New Mexico
Albuquerque NM 87131-1126
USA, United States; Website (institutional address; updated 12 Feb 2015) |
||||||||||||||||||||||||||||||
Catalogs: |
| ||||||||||||||||||||||||||||||
References: | Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
| ||||||||||||||||||||||||||||||
Photos: |
| ||||||||||||||||||||||||||||||
Geography: |
Statistics: This is 1 of 7552 approved meteorites from (Northwest Africa) (plus 1969 unapproved names) |