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Northwest Africa 13275
Basic information Name: Northwest Africa 13275
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13275
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass:help 3.88 kg
Recommended:  L6    [explanation]

This is 1 of 11582 approved meteorites (plus 10 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 21 Mar 2020
Writeup from MB 109:

Northwest Africa 13275 (NWA 13275)

(Northwest Africa)

Purchased: 2019 Oct

Classification: Ordinary chondrite (L6)

History: Purchased by Grant Harkness in October 2019 from a dealer in Zagora, Morocco, and later sold to Patrick Brown.

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Extensively recrystallized specimen with rare remnant partial chondrules and stained metal grains.

Geochemistry: Olivine (Fa24.9±0.6, range Fa24.0-25.6, N = 7), low-Ca pyroxene (Fs20.7±0.2Wo1.5±0.2, range Fs20.4-21.0Wo1.1-1.8, N = 5), augite (Fs8.6±0.9Wo43.8±0.9, range Fs7.7-9.5Wo43.0-44.8, N = 3).

Classification: Ordinary chondrite (L6).

Specimens: 53.95 g including one polished thin section at PSF; main mass plus one polished thin section with Mr. P. Brown.

Data from:
  Table 0
  Line 0:
Place of purchase:Zagora
Date:P 2019 Oct
Mass (g):3880
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):24.9±0.6
Ferrosilite (mol%):20.7±0.2
Wollastonite (mol%):1.5±0.2
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):29.9
Type spec location:PSF
Main mass:P. Brown
Comments:Work name HC20; submitted by A. Irving
   and collections
PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
BrownU: Brown University Providence, RI 02912, United States (institutional address; updated 7 Sep 2019)
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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     This is 1 of 7937 approved meteorites from (Northwest Africa) (plus 1960 unapproved names)

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