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Northwest Africa 13681
Basic information Name: Northwest Africa 13681
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13681
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass:help 245 g
Classification
  history:
Recommended:  CK5    [explanation]

This is 1 of 182 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 6 Feb 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 13681 (NWA 13681)

(Northwest Africa)

Purchased: 2014

Classification: Carbonaceous chondrite (CK5)

History: The meteorite was purchased from a dealer in Rissani, Morocco.

Physical characteristics: Dark grayish to greenish rock mostly covered with fusion crust.

Petrography: The meteorite predominantly consists of fine-grained recrystallized matrix dominated by ferrous olivine with some scattered chondrules still being discernable. Cr-rich magnetite is abundant. More minor phases include intermediate plagioclase, low-Ca pyroxene, Ca-pyroxene, and troilite; metal was not detected.

Geochemistry: olivine: Fa32.6±0.1 (FeO/MnO=104±7, n=4); low-Ca pyroxene: Fs26.8±0.6Wo2.3±0.7, n=4; Ca-pyroxene: Fs9.8±0.9Wo46.8±0.3, n=4

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Rissani, Morocco
Date:P 2014
Mass (g):245
Pieces:1
Class:CK5
Shock stage:S2
Weathering grade:low
Fayalite (mol%):32.6
Ferrosilite (mol%):26.8; 9.8
Wollastonite (mol%):2.3; 46.8
Classifier:A. Greshake, MNB
Type spec mass (g):20.2
Type spec location:MNB
Main mass:Tomasz Jakubowski
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. 110, in preparation (2021)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7912 approved meteorites from (Northwest Africa) (plus 1974 unapproved names)

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