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Northwest Africa 14005
Basic information Name: Northwest Africa 14005
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14005
Observed fall: No
Year found: 2020
Country: Algeria
Mass:help 15 g
Meteoritical Bulletin:  MB 110  (2022)  Lunar (feldsp. breccia)
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 342 approved meteorites classified as Lunar (feldsp. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 18 Jun 2021
Writeup from MB 110:

Northwest Africa 14005 (NWA 14005)


Find: 2020

Classification: Lunar meteorite (feldspathic breccia)

History: Acquired in 2020 by Jose Garcia from Khaled Zed, who had previously found the sample in Algeria.

Physical characteristics: Single stone, gray in color,covered by desert varnish. It retains a small part of the eroded fusion crust. The interior is composed of light and dark clasts, with visible shock melt veins present throughout the matrix.

Petrography: (Jose Garcia, MCM; D. Sheikh, Cascadia) This specimen is a breccia composed predominantly of sub-angular to sub-rounded anorthitic clasts (up to ~1.5 mm) and isolated mineral fragments of olivine and pyroxene set in a fine-grained matrix that contains interconnected areas of shock melt veins and trace amounts of ilmenite and troilite. Estimated modal abundances: Anorthitic plagioclase (90%), Olivine (3%), Pyroxene (3%), Shock melt veins (3%), Opaques (1%).

Geochemistry: (D. Sheikh, Cascadia) Olivine (Fa33.9±3.5, range Fa30.9-37.8, Fe/Mn=72±4, n=5), Low-Ca Pyroxene (Fs42.1±1.5Wo0.8±0.1, range Fs41.0-43.2Wo0.7-0.8, Fe/Mn=50±4, n=2), Pigeonite (Fs28.7±3.2Wo17.7±2.7, range Fs23.4-35.2Wo14.9-21.9, Fe/Mn=53±5, n=10), Augite (Fs21.0±4.0Wo32.0±4.6, range Fs16.9-24.8Wo27.9-37.0, Fe/Mn=53±6, n=3), Plagioclase (An96.0±0.5, range An94.8-97.0, n=36).

Classification: Lunar (feldspathic breccia).

Specimens: 3.04 g and a thin section at Cascadia; main mass (11.8 g) with Jose Garcia at MCM.

Data from:
  Table 0
  Line 0:
Mass (g):15
Class:Lunar (feldsp. breccia)
Shock stage:moderate
Weathering grade:moderate
Fayalite (mol%):33.9±3.5
Ferrosilite (mol%):42.1±0.8, 28.7±3.2, 21.0±4.0
Wollastonite (mol%):0.8±0.1, 17.7±2.7, 32.0±4.6
Classifier:D. Sheikh, Cascadia; Jose Garcia, MCM
Type spec mass (g):3.04
Type spec location:Cascadia
Main mass:Jose Garcia
Finder:Khaled Zed
Comments:Submitted by Daniel Sheikh
   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)
MCM: Museo Canario de Meteoritos Las Palmas de Gran Canaria, Spain (institutional address; updated 26 Nov 2016)
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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     This is 1 of 1376 approved meteorites from Algeria (plus 31 unapproved names) (plus 4 impact craters)

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