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Northwest Africa 14934
Basic information Name: Northwest Africa 14934
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14934
Observed fall: No
Year found: 2022
Country: Mauritania
Mass:help 12.3 kg
Classification
  history:
Recommended:  Eucrite-br    [explanation]

This is 1 of 207 approved meteorites classified as Eucrite-br.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 18 May 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 14934 (NWA 14934)

Mauritania

Purchased: 2022

Classification: HED achondrite (Eucrite, brecciated)

History: A single piece was found by a nomad from undisclosed coordinates in northwest Africa. The meteorite was eventually purchased by Carlos Muñecas (Expometeoritos) from a dealer in Mauritania.

Physical characteristics: Sample has a dark brown exterior with an irregular shape. The cut face shows an igneous texture.

Petrography: Description and classification (A. Love, App) Sample has a brecciated texture composed of sparse gabbroic clasts (pigeonite up to 600µm in length) enclosed within a finer-grained (pigeonite up to 150 µm) vesicular and vuggy, subophitic-textured lithology composed of lath-shaped plagioclase surrounding embayed, chaotically-zoned, polycrystalline aggregates of pigeonite. Additional minerals are: ilmenite, Ti-bearing chromite rare troilite, phosphates and a silica polymorph (some is lath-shaped).

Geochemistry: (A. Love, App) Pigeonite (Fs47.1±5.1Wo12.2±2.4, Mg#46.3±6.8, Fe/Mn=30.5±1.7, n=23); plagioclase (An91.2±3.2Or0.0, n=8).

Classification: HED achondrite (eucrite breccia). Based on grain size of clasts, plagioclase compositions, Fe/Mn ratios of pigeonite and texture, sample is a gabbroic eucrite breccia.

Specimens: Carlos Muñecas (Expometeoritos) holds the main mass. A polished thin section and 58.55 g endcut are on deposit at App.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Mauritania
Date:P 2022
Mass (g):12300
Pieces:1
Class:Eucrite-br
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):47.1±5.1
Wollastonite (mol%):12.2±2.4
Magnetic suscept.:2.62
Classifier:A. Love, App
Type spec mass (g):58.55
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:
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Geography:

Mauritania
Coordinates:Unknown.

Statistics:
     This is 1 of 166 approved meteorites from Mauritania (plus 2 unapproved names) (plus 2 impact craters)

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