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Northwest Africa 14836
Basic information Name: Northwest Africa 14836
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14836
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 90 g
Classification
  history:
Meteoritical Bulletin:  MB 111  (2023)  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 13 May 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 14836 (NWA 14836)

(Northwest Africa)

Purchased: 2021

Classification: Lunar meteorite (feldspathic breccia)

History: Purchased by Chalom Malka in 2021 by Naji C. in Morocco.

Physical characteristics: Five pieces with slightly weathered fusion crust.

Petrography: (D. Sheikh, Cascadia) Sample is a breccia composed of mm-sized (up to 5 mm) sub-rounded lithic clasts (mostly anorthitic) set within a fine-grained matrix containing areas of melt rock (some having vesicles). Accessory phases include Fe-Ni metal, troilite, and SiO2 glass.

Geochemistry: Olivine (Fa30.8±4.0, range Fa21.4-36.4, FeO/MnO=88±14, n=20), Low-Ca Pyroxene (Fs20.9±4.9Wo4.1±0.8, range Fs13.8-25.1Wo2.9-4.9, FeO/MnO=55±15, n=4), Pigeonite (Fs27.3±3.4Wo9.4±3.8, range Fs22.8-32.0Wo5.6-14.9, FeO/MnO=64±12, n=5), Augite (Fs21.1Wo29.6, FeO/MnO=70, n=1), Calcic Plagioclase (An96.5±0.6, range An95.4-97.4, n=7).

Classification: Lunar (feldspathic breccia, containing melt rock areas).

Specimens: 18.1 grams at Cascadia, main mass with Chalom Malka

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2021
Mass (g):90
Pieces:5
Class:Lunar (feldsp. breccia)
Shock stage:moderate
Weathering grade:low
Fayalite (mol%):30.8±4.0
Ferrosilite (mol%):20.9±4.9, 27.3±3.4, 21.1
Wollastonite (mol%):4.1±0.8, 9.4±3.8, 29.6
Classifier:D. Sheikh, Cascadia
Type spec mass (g):18.1
Type spec location:Cascadia
Main mass:Chalom Malka
Comments:CML 1521; 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)
Catalogs:
References: Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Chabot N. L., D’Orazio M., Goodrich C., Greshake A., Gross J., Joy K. H., Komatsu M. and Miao B. (2023) The Meteoritical Bulletin, No. 111. Meteoritics & Planetary Science 58, 901–904. ?
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9825 approved meteorites from (Northwest Africa) (plus 1851 unapproved names)

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