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Northwest Africa 14548
Basic information Name: Northwest Africa 14548
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14548
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 150 g
Classification
  history:
Recommended:  LL3    [explanation]

This is 1 of 409 approved meteorites classified as LL3.   [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 22 Dec 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14548 (NWA 14548)

(Northwest Africa)

Purchased: 2021

Classification: Ordinary chondrite (LL3)

History: Three pieces, weighing a total of 150g were found by a nomad in a place in northwest Africa of unknown coordinates. The meteorite was eventually purchased by Carlos Mun_ecas from a dealer of Tindouf, Algeria.

Physical characteristics: A dark brown patina covers about 80% of the stone. Weathering has removed fusion crust on two sides, revealing a lightly oxidized surface beneath. The shape is thin and oblong.

Petrography: Description and classification (H. Brown, App) Sample shows abundant chondrules with an average diameter of 709 μm (142-1915 μm, n=81). Metal has been altered to weathering products. Additional minerals are: phosphates, troilite, chromite and secondary calcite.

Geochemistry: (H. Brown, App) Olivine (Fa18.8±11.5, Fe/Mn=51.2±13.4, Cr2O3 in ferroan chondrules= 0.1±0.1, n=22); low-Ca pyroxene (Fs11.5±10.5Wo0.7±0.7, Fe/Mn=25.2±18.7 n=14); pigeonite (Fs12.8Wo8.3, n=1).

Classification: Ordinary Chondrite (LL3 S1 W3.6) Low magnetic susceptibility suggests sample is LL. Classified as a Type 3, given the low average and high standard deviation of Fa and Fs.

Specimens: Carlos Muñecas (Expometeoritos) and Adrian Contreras hold the 63 g main mass. An epoxy mount, a polished thin section and a cut individual weighing 22.40 g are on deposit at App.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Tindouf, Algeria
Date:P 2021
Mass (g):150
Pieces:3
Class:LL3
Shock stage:C-S2
Weathering grade:W3
Fayalite (mol%):18.8±11.5
Ferrosilite (mol%):11.5±10.5; 12.8
Wollastonite (mol%):0.7±0.7; 8.3
Magnetic suscept.:3.42
Classifier:Henry Brown
Type spec mass (g):22.4
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)
Mun: 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 8390 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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