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Northwest Africa 13375
Basic information Name: Northwest Africa 13375
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13375
Observed fall: No
Year found: 2018
Country: Mauritania
Mass:help 1382 g
Classification
  history:
Recommended:  L6    [explanation]

This is 1 of 11338 approved meteorites (plus 6 unapproved names) classified as L6.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 2 Aug 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13375 (NWA 13375)

Mauritania

Find: 2018

Classification: Ordinary chondrite (L6)

History: Collected by a nomad in an undetermined place in northern Mauritania during 2018. Purchased by Geologist Juan Avilés Poblador in Spring 2019 on behalf of the UAlic (Earth Sciences Department, Laboratory of Applied Petrology).

Physical characteristics: The single, 1382 g stone has a light red-brown exterior. Cut surfaces reveal a brecciated texture with sub cm-scale clasts set in a dark matrix.

Petrography: (C. Herd and H. Shek, UAb) Optical and microprobe examination of a polished thin section shows a brecciated texture consisting of clasts of variable size with poorly-defined chondrules, cross-cut by numerous dark veins. Iron oxide veining is pervasive. Shock effects include strong mosacism, PDFs and planar fractures in olivine, veins, and shock-darkened areas.

Geochemistry: (C. Herd and H. Shek, UAb) Data obtained by EMP examination of carbon-coated thin section: Olivine Fa25.6±1.0 (n=69); Low-Ca Pyroxene Fs22.0±1.0Wo1.4±0.2 (n=39). Compositions are consistent between clasts.

Classification: Ordinary chondrite, L6, monomict breccia.

Specimens: Type specimen of 26.7 g, including one thin section, is at UAb. Main mass at UAlic.

Data from:
  MB109
  Table 0
  Line 0:
Date:2018
Mass (g):1382
Pieces:1
Class:L6
Shock stage:S5
Weathering grade:W2.0
Fayalite (mol%):25.6±1.0 (n=69)
Ferrosilite (mol%):22.0±1.0 (n=39)
Wollastonite (mol%):1.4±0.2 (n=39)
Classifier:C. Herd, UAb
Type spec mass (g):26.7
Type spec location:UAb
Main mass:UAlic
Comments:Field number 6; submitted by C. Herd
Institutions
   and collections		 UAb: 1-26 Earth Sciences Building, University of Alberta, Edmonton, AB, T6G 2E3, Canada, Canada; Website (institutional address; updated 17 Oct 2011)
UAlic: Earth Sciences Department University of Alicante San Vicente del Raspeig, Spain (institutional address; updated 9 Feb 2020)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
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Geography:

Mauritania
Coordinates:Unknown.

Statistics:
     This is 1 of 127 approved meteorites from Mauritania (plus 1 unapproved name) (plus 2 impact craters)

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