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Northwest Africa 4679
Basic information Name: Northwest Africa 4679
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 4679
Observed fall: No
Year found: 2006
Country: (Northwest Africa)
Mass:help 735 g
Classification
  history:
Meteoritical Bulletin:  MB 105  (2016)  CK4
Recommended:  CK4    [explanation]

This is 1 of 117 approved meteorites classified as CK4.   [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 Nov 2016
Writeuphelp
Writeup from MB 105:

Northwest Africa 4679 (NWA 4679)

(Northwest Africa)

Purchased: 2006 May

Classification: Carbonaceous chondrite (CK4)

Petrography: (K. Metzler, IfP) Chondrules and CAIs (up to 6 mm) are embedded in a fine-grained brownish matrix. Mean apparent chondrule size 1.4±0.5 mm (0.2-2.9 mm; n=63). The sample is interspersed with magnetite nodules.

Geochemistry: Random olivine measurements revealedFa 32.2±0.6 (Fa31.3-33.0; n=14). One BO chondrule with igneous rim shows a relict unequilibrated core with Fa7.9. The compositional range of feldspar is An17.3-35.1 (n=4). Magnetite is the most abundant opaque phase and shows significant concentrations of elements other than Fe (n=3): MgO 1.9-2.0 wt%; Al2O3 3.4-4.0 wt%; TiO2 0.8-0.9 wt%; Cr2O3 2.9-3.6 wt%; NiO 0.3-0.5 wt%.

Classification: CK chondrite based on mineral chemistry. Petrologic type 4 based on the chemical variation of olivine and pyroxene.

Data from:
  MB105
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P 2006 May
Mass (g):735
Pieces:1
Class:CK4
Shock stage:S1
Weathering grade:moderate
Fayalite (mol%):32.2±0.6 (31.3-33.0; n=14)
Ferrosilite (mol%):25.7±1.3 (23.8-28.9; n=13)
Wollastonite (mol%):1.1±0.4 (0.5-2.0; n=13)
Classifier:K. Metzler, IfP
Type spec mass (g):20
Type spec location:IfP
Main mass:Carsten Giessler, Germany
Comments:Originally submitted by Ray Pickard; submitted by K. Metzler (IfP)
Institutions
   and collections
IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Gipo Meteorites      
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Aeroliths Collection Theodossiou   
aranemac Photo added 19 Apr 2022
Auricular Photo added 19 Apr 2022
Charley Kettel Photo added 19 Apr 2022
Gregor H.   
Jean-Michel Masson Photo added 19 Apr 2022
Mirko Graul Photo added 19 Apr 2022
Photo added 19 Apr 2022
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8420 approved meteorites from (Northwest Africa) (plus 1900 unapproved names)

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