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Northwest Africa 12234
Basic information Name: Northwest Africa 12234
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12234
Observed fall: No
Year found: 2016
Country: Algeria
Mass:help 257 g
Classification
  history:
Recommended:  LL3    [explanation]

This is 1 of 299 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 20 Oct 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 12234 (NWA 12234)

Algeria

Find: 2016 March

Classification: Ordinary chondrite (LL3)

Petrography: (D. Sheikh, FSU) Composed of small to medium-sized chondrules (average ~0.7 mm) in a fine-grained matrix. Olivine and pyroxene are both heterogeneous in composition throughout. Low amount of metal present.

Geochemistry: Olivine, Fa20.8±9.6 (Fa4.5-38.7, N=55); orthopyroxene Fs16.2±5.3Wo3.2±0.4 (Fs8.2-31.5Wo2.2-3.8, N=50).

Classification: Ordinary Chondrite (LL3)

Specimens: 22.13 grams at UCLA; main mass with Matthew Stream.

Data from:
  MB107
  Table 0
  Line 0:
Date:2016 March
Mass (g):257
Pieces:1
Class:LL3
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):20.8±9.6 (4.5-38.7, N=55)
Ferrosilite (mol%):16.2±5.3 (8.2-31.5, N=50)
Wollastonite (mol%):3.2±0.4 (2.2-3.8, N=50)
Classifier:D. Sheikh, FSU
Type spec mass (g):22.13
Type spec location:UCLA
Main mass:Matthew Stream
Comments:Submitted by Daniel Sheikh
Institutions
   and collections
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011)
FSU: Department of Geological Sciences, Florida State University, Tallahassee FL 32306-4100, United States (institutional address; updated 16 Dec 2010)
Catalogs:
References: Published in Meteoritical Bulletin, no. 107, in preparation (2018)
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Geography:

Algeria
Coordinates:Unknown.

Statistics:
     This is 1 of 938 approved meteorites from Algeria (plus 26 unapproved names) (plus 4 impact craters)

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