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Northwest Africa 11802
Basic information Name: Northwest Africa 11802
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11802
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 447 g
Meteoritical Bulletin:  MB 107  (2018)  L3
Recommended:  L3    [explanation]

This is 1 of 787 approved meteorites (plus 1 unapproved name) classified as L3.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 28 May 2018
Writeup from MB 107:

Northwest Africa 11802 (NWA 11802)

(Northwest Africa)

Purchased: 2017 Jun

Classification: Ordinary chondrite (L3)

History: Purchased by Gary Fujihara in June 2017 from a Moroccan dealer.

Petrography: (A. Irving and S. Kuehner, UWS) Closely-packed unequilibrated chondrules (apparent diameter 620 ± 410 µm, N = 18) are set in a sparse fine grained matrix containing stained metal.

Geochemistry: Olivine (Fa0.6-81.6, Cr2O3 in ferroan examples 0.06-0.28 wt.%, mean 0.12±0.06 wt.%, N = 9), orthopyroxene (Fs1.5-23.3Wo0.2-3.4, N = 3), subcalcic augite (Fs14.6Wo26.6), augite (Fs5.4Wo45.4). Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.76.

Classification: Ordinary chondrite (L3). The ranges of Fa content in olivine and of Cr2O3 content in ferroan olivine indicate a relatively low petrologic subtype between 3.3 and 3.5.

Specimens: 20.5 g including one polished thin section at UWB; remainder with Mr. G. Fujihara.

Data from:
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2017 Jun
Mass (g):446.5
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):0.6-81.6
Ferrosilite (mol%):1.5-23.3
Wollastonite (mol%):0.2-3.4
Magnetic suscept.:4.76
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.5
Type spec location:UWB
Main mass:G. Fujihara
Comments:GF18-1; submitted by A. Irving
   and collections
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
References: Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
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     This is 1 of 8495 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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