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Northwest Africa 12671
Basic information Name: Northwest Africa 12671
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12671
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 680 g
Classification
  history:
Recommended:  CK6    [explanation]

This is 1 of 56 approved meteorites classified as CK6.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites
Comments: Approved 11 Jun 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12671 (NWA 12671)

(Northwest Africa)

Purchased: 2018

Classification: Carbonaceous chondrite (CK6)

History: The meteorite was purchased from a local meteorite dealer in Laayoune, Mauritania.

Physical characteristics: Many small dark greyish fragments some of which are partly covered with fusion crust.

Petrography: The meteorite displays a dark-grayish interior and predominantly consists of fine-grained recrystallized matrix dominated by ferrous olivine. Chondrules are only rarely encountered. Minor phases include intermediate plagioclase, low-Ca pyroxene, Ca-pyroxene, and FeNi-sulfides. Cr-rich magnetite is abundant; metal is virtually absent.

Geochemistry: olivine: Fa28.7±0.2 (FeO/MnO=100±10, n=11); low-Ca pyroxene: Fs26.8±0.9Wo0.5±0.1, n=12; Ca-pyroxene: Fs8.4±0.3Wo46.2±0.3, n=15

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Laayoune, Morocco
Date:P 2018
Mass (g):680
Pieces:many
Class:CK6
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):28.7
Ferrosilite (mol%):26.8; 8.4
Wollastonite (mol%):0.5; 46.2
Classifier:A. Greshake, MNB
Type spec mass (g):22.2
Type spec location:MNB
Main mass:Larbi Chnaoui
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstrasse 43, D-10115 Berlin, Germany (institutional address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 108, in preparation (2019)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6781 approved meteorites from (Northwest Africa) (plus 2047 unapproved names)

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