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Northwest Africa 14279
Basic information Name: Northwest Africa 14279
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14279
Observed fall: No
Year found: 2021
Country: Algeria
Mass:help 3.4 kg
Classification
  history:
Recommended:  Winonaite    [explanation]

This is 1 of 79 approved meteorites (plus 1 unapproved name) classified as Winonaite.   [show all]
Search for other: Primitive achondrites, Winonaites
Comments: Approved 31 Oct 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14279 (NWA 14279)

Algeria

Find: 2021

Classification: Primitive achondrite (Winonaite)

History: Purchased in 2021 by Adrián Contreras Gómez, Shun-Chung Yang, and Juan Chen from Ali Mustapha in Algeria.

Physical characteristics: Sample contains visible fusion crust.

Petrography: (D. Sheikh, Cascadia) Sample displays a granoblastic texture composed of forsterite, enstatite, augite, and sodic plagioclase grains meeting at 120° triple junctions (average silicate grain size ~ 260±50 µm). Large visible grains of Fe-Ni metal (up to 3 mm) are scattered across the sample along with accessory troilite and chlorapatite.

Geochemistry: Forsterite (Fa3.5±0.3, range Fa2.8-3.8, FeO/MnO=19±4, n=11), Enstatite (Fs4.5±0.1Wo1.5±0.4, range Fs4.3-4.6Wo0.8-1.8, FeO/MnO=13±4, n=6), Augite (Fs1.4±0.2Wo44.6±0.4, range Fs1.0-1.7Wo44.1-45.3, FeO/MnO=14±3, n=7), Sodic Plagioclase (An20.6±0.6Or1.7±0.3, range An20.2-21.5Or1.3-2.1, n=6).

Classification: Primitive achondrite (Winonaite).

Specimens: 20.5 g and a thin section at NHMLAC; 176 g main mass with Adrián Contreras Gómez.

Data from:
  MB110
  Table 0
  Line 0:
Date:2021
Mass (g):3400
Pieces:many
Class:Winonaite
Shock stage:low
Weathering grade:low
Fayalite (mol%):3.5±0.3
Ferrosilite (mol%):4.5±0.1, 1.4±0.2
Wollastonite (mol%):1.5±0.4, 44.6±0.4
Classifier:D. Sheikh, Cascadia
Type spec mass (g):20.5
Type spec location:NHMLAC
Main mass:Adrián Contreras Gómez
Comments:Submitted by Daniel Sheikh
Institutions
   and collections
Cascadia: Cascadia Meteorite Laboratory, Portland State University, Department of Geology, Room 17 Cramer Hall, 1721 SW Broadway, Portland, OR 97201, United States; Website (institutional address; updated 28 Oct 2011)
NHMLAC: Natural History Museum of Los Angeles County 900 Exposition Blvd., Los Angeles, CA 90007 , United States; Website (institutional address; updated 17 Jul 2021)
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
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Algeria
Coordinates:Unknown.

Statistics:
     This is 1 of 1250 approved meteorites from Algeria (plus 29 unapproved names) (plus 4 impact craters)

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