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Northwest Africa 14683 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 14683 This is an OFFICIAL meteorite name. Abbreviation: NWA 14683 Observed fall: No Year found: 2020 Country: (Northwest Africa) Mass: 5 kg | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 24 approved meteorites classified as Diogenite-olivine. [show all] Search for other: Achondrites, Diogenites, and HED achondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 20 Jun 2022 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 111:
Northwest Africa 14683 (NWA 14683) (Northwest Africa) Purchased: 2020 Classification: HED achondrite (Diogenite, olivine) History: Purchased January, 2020 by Mark Lyon from a northwest African dealer Physical characteristics: Many stones partially covered in black fusion crust. Interior of sample shows a brecciated interior of medium to coarse pyroxene grains. A few scattered darker grains are also visible. Petrography: (A. Ross, UNM; D. Dickens, NMMS; C. Agee, UNM) Examination of polished probe mount shows pyroxene is the dominant mineral in this meteorite. Pyroxenes are very uniform with no zoning observed. Olivine grains are scattered throughout and are relatively uniform in chemical composition. Small sparsely distributed plagioclase (labradorite) grains were observed enclosed in larger olivine grains. Opaque phases were mostly chromite, with rare troilite and ilmenite present. A single very small kamacite grain embedded in chromite, a single pentlandite grain, and a single Cu+Zn grain were also observed. Geochemistry: (A. Ross, UNM) Olivine Fa26.5±2.6, Fe/Mn=51±1, n=6; low-Ca pyroxene Fs19.9±0.7Wo3.0±0.8, Fe/Mn=31±3, n=3; plagioclase An52.81. Classification: Diogenite (olivine-bearing) Specimens: 27.5g including a probe mount on deposit at UNM, Mark Lyon holds the main mass. | ||||||||||||||||||||||||||||||
Data from: MB111 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 Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Chabot N. L., D’Orazio M., Goodrich C., Greshake A., Gross J., Joy K. H., Komatsu M. and Miao B. (2023) The Meteoritical Bulletin, No. 111. Meteoritics & Planetary Science 58, 901–904. ?
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Geography: |
Statistics: This is 1 of 9589 approved meteorites from (Northwest Africa) (plus 1869 unapproved names) | ||||||||||||||||||||||||||||||
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Revision history: |
This lists important revisions made to data for this record.
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