header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 19 Jun 2024
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 2053
Basic information Name: Northwest Africa 2053
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 2053
Observed fall: No
Year found: 2003
Country: (Northwest Africa)
Mass:help 490 g
Classification
  history:
Recommended:  LL5    [explanation]

This is 1 of 3303 approved meteorites (plus 1 unapproved name) classified as LL5.   [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 8 Feb 2024
Writeuphelp
Writeup from MB 113:

Northwest Africa 2053 (NWA 2053)

(Northwest Africa)

Purchased: 2003

Classification: Ordinary chondrite (LL5)

History: Purchased by Michael Farmer in 2003 from a Moroccan dealer.

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Sparse chondrules are present in a recrystallized assemblage containing sodic plagioclase, kamacite, chromite, pentlandite and troilite.

Geochemistry: Olivine (Fa28.7±0.6, range Fa28.1-29.6, N = 10), low-Ca pyroxene (Fs23.2±0.3Wo1.6±0.3, range Fs23.1-23.6Wo1.3-1.9, N = 10).

Classification: Ordinary chondrite (LL5).

Specimens: 20.3 g including one polished thin section at BrownU; remainder with Farmer.

Data from:
  MB113
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2003
Mass (g):490
Pieces:1
Class:LL5
Shock stage:S2
Weathering grade:W0/1
Fayalite (mol%):28.7±0.6
Ferrosilite (mol%):23.2±0.3
Wollastonite (mol%):1.6±0.3
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):20.3
Type spec location:BrownU
Main mass:Farmer
Comments:Work names TB279 and F107, thin section OTP7; 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)
BrownU: Joseph Boesenberg Brown University Dept of Earth, Environmental and Planetary Sciences (DEEPS) 324 Brook Street Providence, RI 02912 , United States (institutional address; updated 13 Jun 2024)
Catalogs:
References: Published in Meteoritical Bulletin, no. 113, in preparation (2024)
Find references in NASA ADS:
Find references in Google Scholar:
Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Christian Anger / Austromet   
Mike Farmer   
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
David L. Ribeca   
Dirk Hohmann   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9776 approved meteorites from (Northwest Africa) (plus 1862 unapproved names)

Direct link to this page