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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
Classification
  history:
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 241 approved meteorites classified as Lunar (feldsp. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 18 Jun 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14005 (NWA 14005)

Algeria

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:
  MB110
  Table 0
  Line 0:
Date:2020
Mass (g):15
Pieces:3
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
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)
MCM: Museo Canario de Meteoritos Las Palmas de Gran Canaria, Spain (institutional address; updated 26 Nov 2016)
Catalogs:
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Algeria
Coordinates:Unknown.

Statistics:
     This is 1 of 1140 approved meteorites from Algeria (plus 27 unapproved names) (plus 4 impact craters)

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