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

This is 1 of 271 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 Meteoritical Bulletin, no. 111, in preparation (2022)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8390 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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