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Northwest Africa 13982
Basic information Name: Northwest Africa 13982
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13982
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 1535 g
Classification
  history:
Recommended:  R3-6    [explanation]

This is 1 of 30 approved meteorites classified as R3-6.   [show all]
Search for other: Rumuruti chondrites, Rumuruti chondrites (type 3)
Comments: Approved 18 Jun 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 13982 (NWA 13982)

(Northwest Africa)

Purchased: 2020 Jun

Classification: Rumuruti chondrite (R3-6)

History: Purchased in Agadir,Morocco by Aziz Habibi in June 2020.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Very fresh specimen with no staining at all by secondary iron oxyhydroxides. Breccia composed of discrete, well-formed chondrules (both unequilibrated and equilibrated, mean apparent diameter ~500 µm) plus lithic clasts of Type 4 and Type 6 (with triple grain junction texture and no chondrules) set in a much finer grained matrix containing pentlandite, troilite and Ti-chromite. Pentlandite contains a variety of exotic PGE-rich accessory phases, including NiGeFePt. Pd-rich NiGeFePt and AuCuFeSn alloys.

Geochemistry: Olivine in unequilibrated Type 3 chondrules (Fa28.6±12.9, range Fa12.6-41.8, N = 5), olivine in equilibrated Type 4 and Type 7 clasts (Fa38.9±0.3, range Fa38.7-39.3, N = 3), low-Ca pyroxene (Fs15.9±0.8Wo0.5±0.4, range Fs15.3-16.5Wo0.2-0.8, N = 2), pigeonite (Fs19.6Wo7.6), subcalcic augite (Fs28.3Wo22.3), augite (Fs16.0Wo38.2), plagioclase (Ab68.8An29.3Or1.9).

Classification: R3-6 chondrite breccia. This specimen is notable for its freshness and the variety of accessory PGE-rich alloy phases.

Specimens: 24.5 g including one polished thin section at UWB; remainder with Mr. A. Habibi.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Agadir
Date:P 2020 Jun
Mass (g):1535
Pieces:7
Class:R3-6
Shock stage:S2
Weathering grade:W0
Fayalite (mol%):28.6±12.9
Ferrosilite (mol%):15.9±0.8; 19.6; 28.3; 16.0
Wollastonite (mol%):0.5±0.4; 7.6; 22.3; 38.2
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):24.5
Type spec location:UWB
Main mass:A. Habibi
Comments:Work name AH 1003; submitted by A. Irving
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, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Catalogs:
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
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8777 approved meteorites from (Northwest Africa) (plus 1879 unapproved names)

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