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Northwest Africa 8164
Basic information Name: Northwest Africa 8164
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8164
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 62 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  CK6
Recommended:  CK6    [explanation]

This is 1 of 56 approved meteorites classified as CK6.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites
Comments: Approved 29 Dec 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 8164 (NWA 8164)

(Northwest Africa)

Purchased: Oct 2013

Classification: Carbonaceous chondrite (CK6)

History: Bought by Michael Farmer in October 2013 from a meteorite dealer in Morocco.

Physical characteristics: Single, 62.0 g bullet-shaped stone with weathered fusion crust. Sawn surface dominated by asparagus-green olivine.

Petrography: (L. Garvie, ASU) Coarse-grained recrystallized matrix. Scattered large chondrules (mainly 200 to 800 μm, one to 2 mm), commonly mantled by opaques. Mineralogy dominated by olivine, pyroxene with a wide range of compositions, plagioclase, and Cr-rich magnetite, and minor Ca-Cl phosphate and Fe-rich Ni sulfide. Plagioclase to 150 μm. Most sulfides weathered.

Geochemistry: Olivine Fa30.6±0.2, NiO=0.48±0.07, FeO/MnO=108.2±14, n=6. Pyroxenes - low Ca pyx Fs25.6±0.2Wo0.6±0.2, n=2; pigeonite Fs24.0Wo6.7; augite Fs13.7±3.1Wo32.9±9.2, n=2; and diopside Fs8.4Wo47.4. Magnetite Cr2O3=4.1±0.1 wt% and NiO=0.27±0.02 wt%, n=2.

Classification: Carbonaceous chondrite CK6. Moderately weathered.

Specimens: 13.5 g and polished mount at ASU. Fredric Stephan holds the main mass.

Data from:
  MB102
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P Oct 2013
Mass (g):62.0
Pieces:1
Class:CK6
Weathering grade:moderate
Fayalite (mol%):30.6±0.2
Ferrosilite (mol%):25.6±0.2
Wollastonite (mol%):0.6±0.2
Classifier:L. Garvie, ASU
Type spec mass (g):13.5
Type spec location:ASU
Main mass:Fredric Stephan
Finder:unknown
Comments:Submitted by L. Garvie
Institutions
   and collections
ASU: Center for Meteorite Studies, Arizona State University, Tempe, Arizona 85287-1404, United States; Website (institutional address; updated 14 Jan 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6900 approved meteorites from (Northwest Africa) (plus 2035 unapproved names)

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