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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
Recommended:  Pallasite, PMG    [explanation]

This is 1 of 54 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
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:
  Table 0
  Line 0:
Place of purchase:Morocco
Mass (g):500
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
   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)
References: Published in Meteoritical Bulletin, no. 111, in preparation (2022)
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     This is 1 of 9111 approved meteorites from (Northwest Africa) (plus 1873 unapproved names)

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