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Northwest Africa 13390 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 13390 This is an OFFICIAL meteorite name. Abbreviation: NWA 13390 Observed fall: No Year found: 2017 Country: Mauritania Mass: 113 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 33 approved meteorites classified as Lunar (frag. breccia). [show all] Search for other: Lunar meteorites | ||||||||||||||||||||||||||||||
Comments: | Approved 10 Oct 2020 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 109:
Northwest Africa 13390 (NWA 13390) Mauritania Purchased: 2017 Apr 13 Classification: Lunar meteorite (frag. breccia) History: Purchased April 13, 2017, by Dustin Dickens from a nomad in Mauritania. Physical characteristics: A single stone with no fusion crust. Cut surface reveals a fragmental breccia set in a dark-gray ground mass. Petrography: (D. Dickens) This meteorite is a clast-rich polymict breccia with lithic fragments embedded in a fine-grained moderately vesiculated groundmass. Fragmental clasts sizes range from <0.1-6 mm and are primarily basaltic. Kamacite and ilmenite are present. This meteorite is shocked with some impact melt textures present. Geochemistry: (C. Agee, UNM; D. Dickens) Olivine Fa28.5±5.68, Fe/Mn=98±6, n=14; pigeonite Fs35.8±11.6Wo8.0±5.1, Fe/Mn=60±6, n=10; high-Ca pyroxene Fs25.0±3.3Wo30.9±8.6, Fe/Mn=57±8 n=3; plagioclase An96.3±3.0Ab4.7±2.6Or0.3±0.4, n=7; shock melt (20 µm defocused electron beam, proxy for bulk meteorite composition): SiO2=44.8±1.0, Al2O3=26.0±2.9, CaO=15.3±1.2, MgO=5.6±1.2, FeO=4.5±0.3, TiO2=0.39±0.09, Cr2O3=0.11±0.02, MnO=0.07±0.02, Na2O=0.42±0.04, K2O=0.17±0.14 (all wt%), Fe/Mn=61±2, n=4, Mg#=55.4. Classification: Lunar Fragmental Breccia Specimens: 20 g including a probe mount on deposit at UNM, Oliver Dickens holds the main mass. | ||||||||||||||||||||||||||||||
Data from: MB109 Table 0 Line 0: |
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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) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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Photos: |
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Geography: |
Statistics: This is 1 of 221 approved meteorites from Mauritania (plus 2 unapproved names) (plus 2 impact craters) | ||||||||||||||||||||||||||||||
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Revision history: |
This lists important revisions made to data for this record.
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