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Northwest Africa 15122
Basic information Name: Northwest Africa 15122
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15122
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 1154 g
Classification
  history:
Meteoritical Bulletin:  MB 111  (2023)  H4
Recommended:  H4    [explanation]

This is 1 of 6484 approved meteorites (plus 2 unapproved names) classified as H4.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 23 Jul 2022
Revised 22 Aug 2022: Corrected mass
Writeuphelp
Writeup from MB 111:

Northwest Africa 15122 (NWA 15122)

(Northwest Africa)

Purchased: 2020 Jun

Classification: Ordinary chondrite (H4)

History: Purchased by John Divelbiss in June 2020 from a dealer in Tombstone, Arizona, who had obtained the material from a Moroccan source.

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Relatively small, well-formed equilibrated chondrules containing devitrified glass and plagioclase are set in a relatively coarse grained matrix containing altered kamacite, chromite, troilite, merrillite and Fe phosphate, but no plagioclase.

Geochemistry: Olivine (Fa19.0±0.4, range Fa18.7-19.2, N = 7), low-Ca pyroxene (Fs17.0±0.3Wo1.3±0.3, range Fs16.5-17.2Wo1.0-1.7, N = 7).

Classification: Ordinary chondrite (H4).

Specimens: 22.5 g including one polished thin section at UWB; remainder with Mr. J. Divelbiss.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Tombstone, AZ
Date:P 2020 Jun
Mass (g):1154
Pieces:4
Class:H4
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):19.0±0.4
Ferrosilite (mol%):17.0±0.3
Wollastonite (mol%):1.3±0.3
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):22.5
Type spec location:UWB
Main mass:J. Divelbiss
Comments:Work name JD22-1; submitted by A. Irving
Institutions
   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, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
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 Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Chabot N. L., D’Orazio M., Goodrich C., Greshake A., Gross J., Joy K. H., Komatsu M. and Miao B. (2023) The Meteoritical Bulletin, No. 111. Meteoritics & Planetary Science 58, 901–904. ?
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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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