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Northwest Africa 15183
Basic information Name: Northwest Africa 15183
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15183
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 500 g
Classification
  history:
Meteoritical Bulletin:  MB 111  (2023)  Pallasite, PMG
Recommended:  Pallasite, PMG    [explanation]

This is 1 of 58 approved meteorites (plus 1 unapproved name) classified as Pallasite, PMG.   [show all]
Search for other: Main group pallasites, Metal-rich meteorites, and Pallasites
Comments: Approved 19 Aug 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 15183 (NWA 15183)

(Northwest Africa)

Find: 2020

Classification: Pallasite (Main group)

History: Purchased by Jay Piatek from Mostafa Hmini in 2021, reportedly found in 2020.

Physical characteristics: Seven identically appearing pieces found together. Dark brown-black exterior patina with some skeletal framing of olivine crystals. Saw cut slice shows angular to sub-rounded cm-sized green-orange, transparent to gemmy olivine grains set in metal. Etch-patterns reveal approximately equal amounts of kamacite and taenite. The modal abundances are approximately 60% olivne, 40% metal. Oxidation is minimal.

Petrography: (A. Ross, C. Agee, UNM) Reflected light microscopy and electron microprobe analysis reveal the presence olivine, kamacite, taenite, troilite, merrillite and stanfieldite.

Geochemistry: (A. Ross, C. Agee, UNM) Olivine Fa12.0±0.2, Fe/Mn=44±3, Fe/Mg=0.14±0.00, n=6; kamacite Ni=7.0±0.3, Co=0.64±0.02 (wt%), n=2; taenite Ni=28.6±2.3, Co=0.25±0.02 (wt%), n=2.

Classification: Pallasite (main group)

Specimens: 25.3 g on deposit at UNM, Jay Piatek holds a total of 250 g and the main mass of 101 g.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Morocco
Date:2020
Mass (g):500
Pieces:7
Class:Pallasite, PMG
Shock stage:low
Weathering grade:low
Fayalite (mol%):12.1±0.1
Classifier:C. Agee, UNM
Type spec mass (g):25.3
Type spec location:UNM
Main mass:Jay Piatek
Comments:Field name JP-4010; submitted by C. Agee
Institutions
   and collections		 UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)
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 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)
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Revision
  history:
  This lists important revisions made to data for this record.

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