header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 6 May 2021
Search for: Search type: Search limits: Display: Publication:
Names
Text help
Places
Classes
Years
Contains
Starts with
Exact
Sounds like
NonAntarctic
Falls  Non-NWAs
What's new
  in the last:
Limit to approved meteorite names
Search text:  
Northwest Africa 13674
Basic information Name: Northwest Africa 13674
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13674
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 1730 g
Classification
  history:
Recommended:  H7    [explanation]

This is 1 of 26 approved meteorites classified as H7.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 8 Apr 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 13674 (NWA 13674)

(Northwest Africa)

Purchased: 2018

Classification: Ordinary chondrite (H7)

History: Purchased by Craig Zlimen in 2018 from a Moroccan dealer.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Triple grain junction texture among constituent phases is predominant, but there are also sparse pyroxene oikocrysts containing olivine chadacrysts. No remnant chondrules are present. Grain size is about 200 µm. Accessory phases include abundant altered kamacite, taenite, troilite, low-Ti chromite and merrillite. Secondary iron hydroxides are present on grain boundaries.

Geochemistry: Olivine (Fa18.6±0.1, range Fa18.5-18.7, N = 5), low-Ca pyroxene (Fs16.4±0.1Wo3.8±0.6, range Fs16.4-16.5Wo3.4-4.7, N = 4), augite (Fs7.6±0.6Wo42.6±1.1, range Fs7.1-8.2Wo43.5-41.4, N = 2), plagioclase (An9.9Or7.9; An25.3Or2.8; N = 2).

Classification: Ordinary chondrite (H7).

Specimens: 21.8 g including one polished thin section at UWB; remainder with Mr. C. Zlimen.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2018
Mass (g):1730
Pieces:1
Class:H7
Shock stage:S2
Weathering grade:W1/2
Fayalite (mol%):18.6±0.1
Ferrosilite (mol%):16.4±0.1
Wollastonite (mol%):3.8±0.6
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):21.8
Type spec location:UWB
Main mass:C. Zlimen
Comments:Work name ZLI31; 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 7688 approved meteorites from (Northwest Africa) (plus 1972 unapproved names)

Direct link to this page