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Northwest Africa 13544
Basic information Name: Northwest Africa 13544
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13544
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 2.5 kg
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 12 Dec 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13544 (NWA 13544)

(Northwest Africa)

Purchased: 2020

Classification: Carbonaceous chondrite (CK5)

History: The meteorite was purchased from a dealer in Algeria.

Physical characteristics: Dark-grayish individual with some fusion crust.

Petrography: The meteorite displays a grayish to greenish interior and is predominantly composed of recrystallized olivine-dominated matrix with some separated and still well defined chondrules (mean diameter 0.8 mm). Cr-rich magnetite is abundant. More minor phases include intermediate plagioclase, low-Ca pyroxene, and FeS; metal was not detected.

Geochemistry: olivine: Fa30.2±0.2 (FeO/MnO=99±12, n=12); low-Ca pyroxene: Fs25.7±0.2Wo0.6±0.1, n=9

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2020
Mass (g):2500
Pieces:1
Class:CK5
Shock stage:S1
Weathering grade:low
Fayalite (mol%):30.2
Ferrosilite (mol%):25.7
Wollastonite (mol%):0.6
Classifier:A. Greshake, MNB
Type spec mass (g):21.6
Type spec location:MNB
Main mass:Mohammed Baati
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum f├╝r Naturkunde, Invalidenstra├če 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7937 approved meteorites from (Northwest Africa) (plus 1960 unapproved names)

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