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Northwest Africa 14439
Basic information Name: Northwest Africa 14439
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14439
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 9.6 kg
Classification
  history:
Recommended:  Pallasite, PMG    [explanation]

This is 1 of 52 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 5 Dec 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14439 (NWA 14439)

(Northwest Africa)

Purchased: 2021

Classification: Pallasite-PMG

History: Purchased by Jay Piatek from a northwest -African meteorite dealer in 2021.

Physical characteristics: Exterior surface shows numerous recessed dark orange olivine pits bounded by raised metal ridges with darker patina. Saw cut surface shows angular cm-sized brown to dark-orange olivine grains set in metal. The modal abundances are approximately 60% olivine 40% metal.

Petrography: (A. Ross, C. Agee, UNM) Electron microprobe analysis reveals the presence olivine, kamacite, taenite, merrillite, silica and schreibersite, no sulfide observed.

Geochemistry: (A. Ross, C. Agee, UNM) Olivine Fa12.1±0.1, Fe/Mn=56±4, Fe/Mg=0.14±0.00, n=6; kamacite Ni=6.9±0.4, Co=0.49±0.04 (wt%), n=3; taenite Ni=29.8±5.0, Co=0.15±0.07 (wt%), n=2.

Classification: Pallasite (main group)

Specimens: 20 g including a probe mount on deposit at UNM, Jay Piatek holds the main mass.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Northwest Africa
Date:P 2021
Mass (g):9600
Pieces:1
Class:Pallasite-PMG
Shock stage:Low
Weathering grade:moderate
Fayalite (mol%):12.1±0.1
Classifier:C. Agee, UNM
Type spec mass (g):20
Type spec location:UNM
Main mass:Jay Piatek
Comments:Fieldname JP-4005; 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., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8777 approved meteorites from (Northwest Africa) (plus 1879 unapproved names)

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