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Northwest Africa 14147 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 14147 This is an OFFICIAL meteorite name. Abbreviation: NWA 14147 Observed fall: No Year found: 2021 Country: (Northwest Africa) Mass: 1053 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 12 approved meteorites classified as R3-4. [show all] Search for other: Rumuruti chondrites, Rumuruti chondrites (type 3) | ||||||||||||||||||||||||||||||
Comments: | Approved 31 Aug 2021 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 110:
Northwest Africa 14147 (NWA 14147) (Northwest Africa) Purchased: 2021 Nov Classification: Rumuruti chondrite (R3-4) History: Purchased by John Higgins in November 2021 from a dealer in Ouarzazate, Morocco. Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Breccia composed of discrete unequilibrated chondrules (apparent diameter 500 ± 250 µm, N = 25) plus Type 3 and Type 4 chondrite lithic clasts, mineral grains and a large (2 cm) melt rock clast, all set in a fine grained matrix (20 vol.% , pale orange in thin section). Accessory phases in all components are pyrrhotite, pentlandite and sodic plagioclase. The fine grained melt rock clast consists of strongly-zoned euhedral olivine grains (mean grainsize ~50 µm) accompanied by chromite, pyrrhotite, pentlandite and interstitial glass. Geochemistry: Olivine in unequilibrated chondrules (Fa33.8±16.0, range Fa13.8-56.4, N = 6), olivine in melt rock clast (core Fa20.6, rim Fa 62.7; N = 2), olivine in matrix (Fa41.0±0.6, range Fa40.5-41.4, N = 2), low-Ca pyroxene (Fs19.8±9.3Wo1.6±1.7, range Fs10.7-27.9Wo0.4-4.0, N = 4), augite (Fs21.7Wo38.6). Classification: R3-4 chondrite breccia with melt-rock clasts. The unusual melt-rock clasts in this specimen resemble those described in DaG 013, PCA 91241 and LAP 031275 by Lunning et al. (2018). Specimens: 51 g including one polished thin section at UWB; remainder with Mr. J. Higgins. | ||||||||||||||||||||||||||||||
Bibliography: |
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Data from: MB110 Table 0 Line 0: |
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Institutions and collections |
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012) WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011) UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023) |
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Catalogs: |
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References: | Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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Geography: |
Statistics: This is 1 of 9627 approved meteorites from (Northwest Africa) (plus 1865 unapproved names) | ||||||||||||||||||||||||||||||
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Revision history: |
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