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Northwest Africa 12348
Basic information Name: Northwest Africa 12348
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12348
Observed fall: No
Year found: 2017
Country: Morocco
Mass:help 2.35 kg
Classification
  history:
Meteoritical Bulletin:  MB 107  (2018)  L4
Recommended:  L4    [explanation]

This is 1 of 1715 approved meteorites (plus 4 unapproved names) classified as L4.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 27 Nov 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 12348 (NWA 12348)

Morocco

Purchased: 2017 Feb

Classification: Ordinary chondrite (L4)

Physical characteristics: The meteorite has a reddish-brown colored matrix containing chondrules and chondrule fragments.

Petrography: (G. Ibe, UWO) Chondrules constitute about 75 vol% of this meteorite and have well-defined rims, up to 2.2 mm in the thin section. Opaque minerals in the meteorite include Fe-Ni metal, troilite, chromite. The amounts of Fe-Ni metal and troilite are ~1% and ~3%, respectively. Plagioclase is present as a minor phase. Undulatory optical extinction could be observed in olivine. About 60 ? 70% of the metal and sulfides were oxidized, but no similar features were observed in the silicates.

Geochemistry: (EMPA, M. Beauchamp, UWO) Olivine Fa25.0±2.0 (n=10), low-Ca pyroxenes (Fs20.5±0.6Wo1.5±0.2, n=10), and plagioclase An12.1±0.02.

Classification: Ordinary Chondrite (L4, S4, W3).

Specimens: 51.3 g including a thin section at UWO. S. Tutorow holds the main mass.

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P 2017 Feb
Mass (g):2347.5
Pieces:1
Class:L4
Shock stage:S4
Weathering grade:W3
Fayalite (mol%):25.0±2.0 (N=10)
Ferrosilite (mol%):20.5±0.6 (N=10)
Wollastonite (mol%):1.5±0.2 (N=10)
Classifier:G. Ibe, UWO
Type spec mass (g):51.3
Type spec location:UWO
Main mass:S. Tutorow
Comments:G705; submitted by A. Bouvier, UWO
Institutions
   and collections
UWO: University of Western Ontario, Department of Earth Sciences, BGS 1026, 1151 Richmond St. N, London, Ontario, Canada N6A 5B7, Canada (institutional address; updated 18 Jul 2015)
Catalogs:
References: Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
Find references in NASA ADS:
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Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1611 approved meteorites from Morocco (plus 22 unapproved names) (plus 1 impact crater)

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