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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 199 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 Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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Geography: 
Coordinates:Unknown.

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

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