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Northwest Africa 12779
Basic information Name: Northwest Africa 12779
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12779
Observed fall: No
Year found: 2017
Country: Morocco
Mass:help 76 g
Classification
  history:
Recommended:  CK5    [explanation]

This is 1 of 157 approved meteorites classified as CK5.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites
Comments: Approved 18 Aug 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12779 (NWA 12779)

Morocco

Purchased: 20 Apr. 2017

Classification: Carbonaceous chondrite (CK5)

History: the meteorite was purchased in Morocco from Moroccan dealer, Aziz Habibi

Petrography: (M. A. Ivanova, Vernad). The meteorite consists of coarse-grained matrix (~60%) and chondrules, their fragments and plagioclase-rich aggregates. POP, BO, PP chondrules are not well delineated. The meteorite contains olivine, pyroxene, plagioclase, Cr-magnetite, ilmenite, spinel and sulfides (pentlandite, pyrrhotite); Fe,Ni-metal is absent.

Geochemistry: Feldspar composition: Ab20.7-81.1, An78.9-14.0; NiO in olivine - 0.77 wt%; magnetite (3.7 wt% Cr2O3, 1.9 wt% Al2O3)

Classification: CK5 chondrite, S2, W4, based on minerals compositions and texture

Specimens: 1 thin section and two pieces of meteorite (13.8 g and 2 g), 15.8 g in total are located at Vernad, the main mass is located at DMUH

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 20 Apr. 2017
Mass (g):76
Pieces:1
Class:CK5
Shock stage:S2
Weathering grade:W4
Fayalite (mol%):30.3±0.5 (N=34)
Ferrosilite (mol%):27.0±0.8 (N=25)
Wollastonite (mol%):0.7±0.4 (N=25)
Classifier:M. A. Ivanova, Vernad
Type spec mass (g):15.8
Type spec location:Vernad
Main mass:DMUH
Comments:Submitted by M. A. Ivanova
Institutions
   and collections
Vernad: Vernadsky Institute of Geochemistry and Analytical Chemistry, Russia (institutional address; updated 21 Feb 2016)
DMUH: Dedovsk Museum of Universe History, Russia; Website (institutional address; updated 26 Sep 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 108, in preparation (2019)
Find references in NASA ADS:
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Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1390 approved meteorites from Morocco (plus 16 unapproved names) (plus 1 impact crater)

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