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Northwest Africa 6009
Basic information Name: Northwest Africa 6009
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 6009
Observed fall: No
Year found: 2009
Country: (Northwest Africa)
Mass:help 75 g
Meteoritical Bulletin:  MB 106  (2018)  CK5
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 18 Feb 2017
Writeup from MB 106:

Northwest Africa 6009 (NWA 6009)

(Northwest Africa)

Purchased: 2009 Oct

Classification: Carbonaceous chondrite (CK5)

Petrography: (K. Metzler, IfP) Chondrules and CAIs are embedded in a fine-grained brownish matrix. The matrix consists mostly of equilibrated Fe-rich olivine grains, interspersed with opaque nodules of Cr-bearing magnetite. The mean grain size of secondary feldspar is around 10µm.

Geochemistry: Random measurements of olivine grains revealed Fa32.3±0.5 (Fa31-33); n=20. The mean Ni content in olivine is 0.38 wt%. Random measurements of low-Ca pyroxene grains revealed Fs27.2±1.2Wo1.0±0.6 (Fs25-30Wo1-3; n=19). One measurement of Ca-pyroxene shows En47Fs10Wo43. The compositional range of feldspar is An34-65 (n=5).

Classification: CK chondrite based on mineral chemistry. Petrologic type 5 based on the equilibrated state of olivine and pyroxene and the fact that chondrules are still visible.

Data from:
  Table 0
  Line 0:
Place of purchase:Erfoud
Date:P 2009 Oct
Mass (g):75
Shock stage:S3
Weathering grade:moderate
Fayalite (mol%):32.3±0.5
Ferrosilite (mol%):27.2±1.2
Wollastonite (mol%):1.0±0.6
Classifier:K. Metzler, IfP
Type spec mass (g):16
Type spec location:IfP
Main mass:Mirko Graul, Bernau, Germany
Comments:Purchased from a mineral dealer in Erfoud, Morocco; submitted by K. Metzler (IfP)
   and collections
IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)
References: Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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     This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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