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Northwest Africa 12780
Basic information Name: Northwest Africa 12780
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12780
Observed fall: No
Year found: 2019
Country: Morocco
Mass:help 8.5 g
Classification
  history:
Recommended:  LL7    [explanation]

This is 1 of 68 approved meteorites classified as LL7.   [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 23 May 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 12780 (NWA 12780)

Morocco

Purchased: 2019

Classification: Ordinary chondrite (LL7)

History: (Ziyao Wang) Purchased by Ziyao Wang from Said Yousfi in Errachidia, Morocco, in Oct. 2019.

Physical characteristics: (Ziyao Wang) brown stone 8.5 g, without fusion crust

Petrography: (R. Bartoschewitz, Bart) highly recrystallized granular texture with grain sizes up to 0.6 mm (av. 0.1 mm), no relict chondrules, and abundant feldspar >100 μm.

Geochemistry: (R. Bartoschewitz, Bart, P. Appel and B. Mader, Kiel) Olivine Fa31.1±0.4 (n=16); pyroxene Fs25.8±1.2Wo3.5±0.9 (n=3); Ca pyroxene En45-48Fs10-13Wo39-43 (n=3); feldspar An4-14Or3 (n=3); chromite CRAL87, FFM92 (n=3). Tetrataenite Co=2.2 wt% (n=3); troilite. Magnetic susceptibility (R. Bartoschewitz, Bart) log χ (× 10-9 m3/kg) = 3.31.

Classification: Ordinary chondrite (LL7), based on texture, Wo content of pyroxenes, plagioclase size, and absence of chondrules

Specimens: 1.73 g at Kiel on deposit, Ziyao Wang holds the main mass and 1 g with Bart.

Data from:
  MB109
  Table 0
  Line 0:
Origin or pseudonym:desert
Date:P 2019
Mass (g):8.5
Pieces:1
Class:LL7
Fayalite (mol%):31.1±0.4 (n=16)
Ferrosilite (mol%):25.8±1.2 (n=3)
Wollastonite (mol%):3.5±0.9
Magnetic suscept.:3.31
Classifier:R. Bartoschewitz
Type spec mass (g):1.73
Type spec location:Kiel
Main mass:Ziyao Wang
Finder:anonymous
Comments:working name WZ114; submitted by R. Bartoschewitz
Institutions
   and collections
Kiel: Geologisches und Mineralogisches Museum, Institut für Geowissenschaften, Christian-Albrechts-Universität Kiel, Ludewig-Mayn-Str. 10, D-24118 Kiel, Germany, Germany (institutional address; updated 13 Sep 2013)
Bart: Bartoschewitz Meteorite Laboratory, Weiland 37, D-38518 Gifhorn, Germany; Website (private address; updated 30 Nov 2019)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
Find references in Google Scholar:
Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Wang Ziyao      
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1523 approved meteorites from Morocco (plus 22 unapproved names) (plus 1 impact crater)

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