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Northwest Africa 14271
Basic information Name: Northwest Africa 14271
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14271
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 179 g
Classification
  history:
Recommended:  R3-4    [explanation]

This is 1 of 11 approved meteorites classified as R3-4.   [show all]
Search for other: Rumuruti chondrites, Rumuruti chondrites (type 3)
Comments: Approved 11 Nov 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14271 (NWA 14271)

(Northwest Africa)

Purchased: 2021 Apr

Classification: Rumuruti chondrite (R3-4)

History: Purchased by Philip Mani in April 2021 from a dealer in Zagora, Morocco.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Discrete well-formed unequilibrated and equilibrated chondrules (apparent diameter 570±230 µm, N = 23) plus Type 3 and Type 4 lithic clasts occur within a fine grained matrix (orange-brown in thin section). Accessory phases include chromite (with variable Ti contents), pyrrhotite (rarely Ni-bearing) and secondary iron hydroxides.

Geochemistry: Olivine (Fa35.6±9.4, range Fa18.8-41.4, N = 5), low-Ca pyroxene (Fs25.0±4.8Wo0.7±0.1, range Fs19.8-29.1Wo0.6-0.7, N = 3), augite (Fs12.8±1.3Wo44.8±0.8, range Fs11.7-14.2Wo45.3-43.9, N = 3).

Classification: R3-4 chondrite breccia.

Specimens: 20.8 g including one polished thin section at UWB; remainder with Mr. P. Mani.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Zagora
Date:P 2021 Apr
Mass (g):179
Pieces:1
Class:R3-4
Shock stage:S2
Weathering grade:moderate
Fayalite (mol%):35.6±9.4
Ferrosilite (mol%):25.0±4.8
Wollastonite (mol%):1.6±0.2
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):20.8
Type spec location:UWB
Main mass:P. Mani
Comments:Work names RC146.2 and PCM21-1; 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 Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8495 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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