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Northwest Africa 11952
Basic information Name: Northwest Africa 11952
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11952
Observed fall: No
Year found: 2005
Country: (Northwest Africa)
Mass:help 22 g
Meteoritical Bulletin:  MB 108  (2020)  L3/4
Recommended:  L3/4    [explanation]

This is 1 of 14 approved meteorites classified as L3/4.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 5 Jan 2019
Writeup from MB 108:

Northwest Africa 11952 (NWA 11952)

(Northwest Africa)

Purchased: 2005

Classification: Ordinary chondrite (L3/4)

History: Purchased by an anonymous collector from a dealer at the Munich Show in 2005, subsequently acquired by the Hollis Collection and then donated to PSF.

Petrography: (A. Irving and S. Kuehner, UWS) Unequilibrated host lithology with rare equilibrated clasts. Host lithology: well-formed chondrules (apparent diameter 770±320 µm, some containing olivine with forsteritic cores) set in a matrix containing stained metal, merrillite and chlorapatite. One L6 lithic clast and one L7 lithic clast (completely recrystallized) were observed in the studied thin section.

Geochemistry: Olivine (core Fa7.1; Fa23.9-25.5, Cr2O3 <0.03 wt.%, N = 6), low-Ca pyroxene (Fs2.7-20.2Wo0.9-1.1, N = 3), clinopyroxene (Fs10.5Wo34.7; Fs2.8Wo45.6; N = 2).

Classification: Ordinary chondrite (L3/4).

Specimens: The entire specimen including one polished thin section is at PSF.

Data from:
  Table 0
  Line 0:
Place of purchase:Munich
Date:P 2005
Mass (g):22
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):7.1-25.5
Ferrosilite (mol%):2.7-20.2
Wollastonite (mol%):0.9-1.1
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):22
Type spec location:PSF
Main mass:PSF
Comments:Work name CHC18013; 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)
References: Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
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     This is 1 of 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names)

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