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Northwest Africa 14935
Basic information Name: Northwest Africa 14935
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14935
Observed fall: No
Year found: 2022
Country: Mauritania
Mass:help 183 g
Classification
  history:
Recommended:  Ureilite    [explanation]

This is 1 of 610 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 6 Aug 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 14935 (NWA 14935)

Mauritania

Purchased: 2022

Classification: Ureilite

History: A nomad found 3 fragments in northwest Africa that were eventually purchased by Carlos Muñecas (Expometeoritos) in 2022 from a dealer in Mauritania.

Physical characteristics: Samples have a brownish-orange, crystalline exterior and are irregular-shaped.

Petrography: Description and classification (A. Love, App) Sample shows granoblastic texture composed of olivine (with reduced grain boundaries composed of forsteritic olivine and enstatite and rare high Ca pyroxene) and twinned pigeonite. Additional minerals are: FeNi metal, troilite, chromite and FeO.

Geochemistry: Olivine (Cores: Fa19.0±0.3, Fe/Mn=39.1±1.9, n=10; rims Fa7.9±3.6, Fe/Mn 14.2±6.5, n=5, Cr2O3=0.77±0.7, CaO=0.31±0.04); enstatite rims (Fs2.5±1.5Wo2.6±1.4, n=4); pigeonite (Fs14.8±4.5Wo7.8±0.8, n=9); high Ca Pyroxene (Fs9.4Wo28.2, n=1). (Fs9.4Wo28.2, n=1).

Classification: Ureilite. Sample is a ureilite based on texture, reduced mineral compositions and presence of graphite.

Specimens: Carlos Muñecas (Expometeoritos) holds the 90 g main mass. A polished thin section and a cut individual weighing 20.5 g are on deposit at App.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Mauritania
Date:P 2022
Mass (g):183g
Pieces:3
Class:Ureilite
Shock stage:low
Weathering grade:moderate
Fayalite (mol%):19.0±0.3 (n=10)
Ferrosilite (mol%):2.5±1.5 (n=4)
Wollastonite (mol%):2.6±1.4
Classifier:A. Love, App
Type spec mass (g):20.5
Type spec location:App
Main mass:Carlos Muñecas (Expometeoritos)
Comments:Submitted by Anthony Love
Institutions
   and collections
App: Department of Geology, 572 Rivers St., Appalachian State University, Boone, NC 28608, United States (institutional address; updated 7 Mar 2013)
Catalogs:
References: Published in Meteoritical Bulletin, no. 111, in preparation (2022)
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Mauritania
Coordinates:Unknown.

Statistics:
     This is 1 of 179 approved meteorites from Mauritania (plus 1 unapproved name) (plus 2 impact craters)

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