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Northwest Africa 14348
Basic information Name: Northwest Africa 14348
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14348
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 430 g
Classification
  history:
Recommended:  Ureilite    [explanation]

This is 1 of 594 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 17 Oct 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14348 (NWA 14348)

(Northwest Africa)

Purchased: 2021

Classification: Ureilite

Petrography: (K. Metzler, IfP) Coarse-grained ultramafic rock (grain size mostly between 0.5 and 1 mm) with curved intergranular boundaries, consisting of olivine and pyroxene grains. Reverse zoning of olivine grains with Mg-rich zones at the margins and along cracks. Accessories are Ni-free metal (partly terrestrially oxidized) and graphite, concentrated along grain boundaries and cracks.

Geochemistry: Mineral compositions and geochemistry: Mean composition of olivine cores: Fa12.2±0.3; mean CaO concentration: 0.29 wt%; n=12. Olivine rims: Fa2.7±0.1; n=3. Mean composition of pyroxene grains: Fs11.0±0.3 Wo8.8±0.2 (Fs10.5-11.4 Wo8.5-9.0); n=11. The mean concentration of Cr2O3 (wt%) in olivine and pyroxene is 0.57 and 1.19, respectively.

Classification: Ureilite, based on modal composition, mineral chemistry, occurrence of considerable amounts of graphite, and typical reduction rims (reverse zoning) around olivine grains.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Mauritania
Date:P 2021
Mass (g):430
Pieces:1
Class:Ureilite
Shock stage:U-S2
Weathering grade:low
Fayalite (mol%):12.2±0.3
Ferrosilite (mol%):11.0±0.3
Wollastonite (mol%):8.8±0.2
Classifier:K. Metzler, IfP
Type spec mass (g):20
Type spec location:IfP
Main mass:Gregor Pacer, Bad Bellingen, Germany
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:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8025 approved meteorites from (Northwest Africa) (plus 1951 unapproved names)

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