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Northwest Africa 13980 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 13980 This is an OFFICIAL meteorite name. Abbreviation: NWA 13980 Observed fall: No Year found: 2021 Country: (Northwest Africa) Mass: 502 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 86 approved meteorites classified as CK3. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CK chondrites, CK3 chondrites, and CV-CK clan chondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 26 Dec 2021 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 110:
Northwest Africa 13980 (NWA 13980) (Northwest Africa) Purchased: 2021 Classification: Carbonaceous chondrite (CK3) History: Purchased by Grant Harkness in 2021 from a Moroccan dealer. Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Breccia composed of Type 3 clasts within a fine grained matrix (very similar to the matrix in the clasts). The clasts consist of separated, well-formed, unequilibrated Cr-magnetite-bearing chondrules (some with concentric rims, apparent diameter 1290 ± 640 µm, N = 25) plus some irregularly-shaped, fine-grained CAI set in a fine grained matrix containing stained Cr-magnetite, intermediate plagioclase, chromite and chlorapatite. Orthopyroxene is apparently absent but augite is quite abundant, and both devitrified glass and feldspar are present. Geochemistry: Olivine (Fa16.7±14.2, range Fa1.1-32.8, N = 6), augite (Fs12.4±13.3Wo49.6±1.1, range Fs1.3-38.3Wo48.4-51.1, N = 6), Al-Ti-diopside in CAI (Fs0.7Wo54.2, Al2O3 8.7 wt.%, TiO2 1.1 wt.%), plagioclase (An21.7Or3.3; An29.9Or2.4; N = 2), magnetite (Cr2O3 2.5-4.2 wt.%, N = 6). Classification: Carbonaceous chondrite (CK3). Specimens: 26 g including one polished thin section is at PSF; remainder in the Harkness Collection. | ||||||||||||||||||||||||||||||
Data from: MB110 Table 0 Line 0: |
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Institutions and collections |
PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011) UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012) BrownU: Joseph Boesenberg Brown University Dept of Earth, Environmental and Planetary Sciences (DEEPS) 324 Brook Street Providence, RI 02912 , United States (institutional address; updated 4 Jan 2024) |
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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 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names) | ||||||||||||||||||||||||||||||
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Revision history: |
This lists important revisions made to data for this record.
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