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Northwest Africa 14013
Basic information Name: Northwest Africa 14013
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14013
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass:help 26.5 g
Classification
  history:
Recommended:  R3-4    [explanation]

This is 1 of 9 approved meteorites classified as R3-4.   [show all]
Search for other: Rumuruti chondrites, Rumuruti chondrites (type 3)
Comments: Approved 17 Jul 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14013 (NWA 14013)

(Northwest Africa)

Purchased: 2015 Jun

Classification: Rumuruti chondrite (R3-4)

History: Purchased by Ziyao Wang in June 2015 from a Moroccan dealer at the Hunan Mineral and Gem Show in Chenzhou City, China.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Very fresh specimen with no evidence of weathering effects. Breccia composed of discrete unequilibrated chondrules (apparent diameter 570 ± 330 µm, N = 25) plus Type 3 and Type 4 lithic clasts set in a fine grained matrix containing pentlandite, troilite, pyrrhotite, low-Ti chromite and sodic to intermediate plagioclase. A tiny OsFe alloy inclusion was found in one troilite grain.

Geochemistry: Olivine in unequilibrated chondrules and Type 3 clasts (Fa26.7±16.9, range Fa4.8-39.7, N = 5), olivine in equilibrated Type 4 clasts (Fa39.3±0.2, range Fa39.1-39.4, N = 2), low-Ca pyroxene (21.4±9.7Wo1.1±0.9, range Fs7.5-29.8Wo0.3-2.2, N = 4), augite (10.5±0.8Wo46.3±0.6, range Fs9.9-11.0Wo45.8-46.7, N = 2).

Classification: R3-4 chondrite breccia. This specimen is notable for its freshness and the presence of a rare accessory Os-rich alloy phase.

Specimens: 5.3 g including one polished thin section at UWB; remainder with Mr. Z. Wang.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Chenzhou City, China
Date:P 2015 Jun
Mass (g):26.5
Pieces:1
Class:R3-4
Shock stage:S2
Weathering grade:W0
Fayalite (mol%):30.3±15.1
Ferrosilite (mol%):21.4±9.7
Wollastonite (mol%):1.1±0.9
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):5.3
Type spec location:UWB
Main mass:Z. Wang
Comments:Work name WZY-21; 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:
Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Ziyao Wang         
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7937 approved meteorites from (Northwest Africa) (plus 1960 unapproved names)

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