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Northwest Africa 12826
Basic information Name: Northwest Africa 12826
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12826
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass:help 25 g
Classification
  history:
Meteoritical Bulletin:  MB 108  (2020)  Lunar
Recommended:  Lunar    [explanation]

This is 1 of 101 approved meteorites classified as Lunar.   [show all]
Search for other: Lunar meteorites
Comments: Approved 21 Sep 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12826 (NWA 12826)

(Northwest Africa)

Purchased: 2019

Classification: Lunar meteorite

History: The meteorite was purchased from a local meteorite dealer in Algeria.

Physical characteristics: Many brownish fragments with some fusion crust.

Petrography: The meteorite is a feldspathic breccia composed of mineral fragments, basaltic clasts, and impact melt clasts set into a fine-grained partly shock-melted groundmass. Most abundant minerals are calcic plagioclase and pigeonite; less abundant are augite and olivine. Accessories include FeS, ilmenite, and FeNi-metal. The meteorite contains shock melt veins.

Geochemistry: olivine: Fa28.3±6.7 (Fa19.7-35.1, FeO/MnO=97±10, n=15); pigeonite: Fs30.9±6.4Wo11.2±4.9 (Fs21.9-40.1Wo6.4-18.9, FeO/MnO=57±6, n=27); Ca-pyroxene: Fs12.5±0.8Wo39.8±2.3 (Fs11.7-14.6Wo33.2-41.3, FeO/MnO=40±4, n=11); calcic plagioclase: An96.9±0.6 (An95.2-97.7, n=17)

Classification: Lunar (feldspathic breccia)

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2019
Mass (g):25
Pieces:many
Class:Lunar
Shock stage:moderate
Weathering grade:moderate
Fayalite (mol%):28.3
Ferrosilite (mol%):30.9; 12.5
Wollastonite (mol%):11.2; 39.8
Classifier:A. Greshake, MNB
Type spec mass (g):5
Type spec location:MNB
Main mass:anonymous
Comments:Submitted by Ansgar Greshake
Institutions
   and collections		 MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Denis gourgues   
Public domain photographs:
Ansgar Greshake   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8890 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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