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Northwest Africa 13111
Basic information Name: Northwest Africa 13111
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13111
Observed fall: No
Year found: 2005
Country: (Northwest Africa)
Mass:help 220 g
Classification
  history:
Meteoritical Bulletin:  MB 109  (2020)  H4/5
Recommended:  H4/5    [explanation]

This is 1 of 499 approved meteorites classified as H4/5.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 10 Jan 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13111 (NWA 13111)

(Northwest Africa)

Purchased: 2005

Classification: Ordinary chondrite (H4/5)

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, UWS & J. Boesenberg, BrownU) Some well-formed chondrules occur in a recrystallized matrix containing altered metal.

Geochemistry: Olivine (Fa18.8±0.3 (range Fa18.4-19.1, N = 5), low-Ca pyroxene (Fs16.7±0.2Wo1.4±0.1 (range Fs16.5-16.8Wo1.1.3-1.5, N = 4), high-Ca pyroxene (Fs5.9Wo45.1).

Classification: Ordinary chondrite (H4/5).

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

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Munich
Date:P 2005
Mass (g):220
Pieces:1
Class:H4/5
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):18.8±0.3
Ferrosilite (mol%):16.7±0.2
Wollastonite (mol%):1.4±0.1
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):220
Type spec location:PSF
Main mass:PSF
Comments:Work name CHC18047; submitted by A. Irving
Institutions
   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: Joseph Boesenberg Brown University Dept of Earth, Environmental and Planetary Sciences (DEEPS) 324 Brook Street Providence, RI 02912 , United States (institutional address; updated 4 Jan 2024)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9627 approved meteorites from (Northwest Africa) (plus 1865 unapproved names)
Also see:
  This lists the most popular meteorites among people who looked up this meteorite.
Revision
  history:
  This lists important revisions made to data for this record.

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