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Northwest Africa 14057
Basic information Name: Northwest Africa 14057
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14057
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 1048 g
Classification
  history:
Recommended:  Ureilite    [explanation]

This is 1 of 582 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 29 Jun 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14057 (NWA 14057)

(Northwest Africa)

Purchased: 2021 Mar

Classification: Ureilite

History: Bought by Mohamed Ali Loud from a Saharawi mineral dealer in Mauritania.

Petrography: (K. Metzler, IfP) Coarse-grained ultramafic rock with metamorphic texture (~120° triple junctions), consisting of olivine and pyroxene grains up to ~2 mm. Metal is concentrated along grain boundaries and mostly oxidized by terrestrial weathering.

Geochemistry: Mineral compositions and geochemistry: Mean olivine composition: Fa19.2±0.3 (Fa18.6-19.8); n=12. The mean CaO concentration in olivine is 0.37 wt%. Mean pyroxene composition: Fs16.0±0.3Wo5.3±1.6 (Fs15.5-16.5Wo4.2-8.9); n=12. The mean concentration of Cr2O3 in olivine and pyroxene is 0.53 wt% and 1.07 wt%, respectively.

Classification: Ureilite

Specimens: Largest piece: 332 g

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Mauritania
Date:P 2021 Mar
Mass (g):1048
Pieces:17
Class:Ureilite
Shock stage:U-S1
Weathering grade:High
Fayalite (mol%):19.2±0.3
Ferrosilite (mol%):16.0±0.3
Wollastonite (mol%):5.3±1.6
Classifier:K. Metzler, IfP
Type spec mass (g):20
Type spec location:IfP
Main mass:Mohamed Ali Loud
Comments:Submitted by K. Metzler, IfP
Institutions
   and collections
IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 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 7912 approved meteorites from (Northwest Africa) (plus 1974 unapproved names)

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