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Northwest Africa 13132
Basic information Name: Northwest Africa 13132
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13132
Observed fall: No
Year found: 2017
Country: Niger
Mass:help 180 kg
Classification
  history:
Recommended:  L5/6    [explanation]

This is 1 of 186 approved meteorites classified as L5/6.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 18 Jan 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13132 (NWA 13132)

Niger

Purchased: 2017

Classification: Ordinary chondrite (L5/6)

History: Purchased by Wei Jiang in 2017 from Morocco.

Physical characteristics: Most fragments are covered by black fusion crust. The masses of fragments are in a range 50 to 500 g. The total mass is ~180 kg.

Petrography: (J. Ji, S. Hu and Y. Lin, IGGCAS) The meteorite is mainly consisting of olivine, pyroxene, plagioclase, Fe-Ni metal, and troilite, with minor chromite andphosphates. Several relict chondrules in nonimpact region, ranging up to ~2.5 mm in diameter. Few shock melt veins are observed.

Geochemistry: Mineral compositions and geochemistry: (J. Ji, S. Hu and Y. Lin, IGGCAS) The olivine and pyroxene are homogeneous in chemical compositions. Olivine: Fa25.4±0.4 (n=27), Orthopyroxene: Fs21.5±0.5Wo1.5±0.2 (n=17), Clinopyroxene: Fs10.6Wo35.4 (n=1)

Classification: (J. Ji, S. Hu and Y. Lin, IGGCAS) L5/6

Specimens: The main mass is held by Wei Jiang.

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2017
Mass (g):180000
Pieces:Many
Class:L5/6
Shock stage:S3/4
Weathering grade:W2
Fayalite (mol%):25.4
Ferrosilite (mol%):21.5
Wollastonite (mol%):1.5
Classifier:J. Ji, S. Hu and Y. Lin, IGGCAS
Type spec mass (g):402
Type spec location:IGGCAS
Main mass:Wei Jiang
Comments:Submitted by J. Ji, S. Hu and Y. Lin, IGGCAS
Institutions
   and collections
IGGCAS: Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China (institutional address; updated 16 Oct 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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Geography:

Niger
Coordinates:Unknown.

Statistics:
     This is 1 of 66 approved meteorites from Niger (plus 4 unapproved names)

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