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Northwest Africa 8780
Basic information Name: Northwest Africa 8780
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8780
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass:help 347 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  CK4
Recommended:  CK4    [explanation]

This is 1 of 105 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 1 Mar 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 8780 (NWA 8780)

(Northwest Africa)

Purchased: 2014 Dec

Classification: Carbonaceous chondrite (CK4)

History: Purchased by Greg Hupé in December 2014 from a Moroccan dealer in Paris, France.

Physical characteristics: Two pieces (286 g and 61 g) which fit together as a single stone.

Petrography: (A. Irving and S. Kuehner, UWS) Separated, well-formed mm-sized chondrules containing Cr-magnetite together with sparse CAI are set within a finer grained, stained matrix. Minerals are olivine, orthopyroxene, subcalcic augite, intermediate plagioclase, Cr-magnetite and altered Ni-poor kamacite.

Geochemistry: Olivine (Fa30.5-30.9, FeO/MnO = 101-134, N = 3), orthopyroxene (Fs24.3-24.4Wo0.6-0.7, N = 3), subcalcic augite (Fs14.4-14.6Wo32.5-33.4, N = 2).

Classification: Carbonaceous chondrite (CK4).

Specimens: 20.1 g including one polished thin section at UWB; the remainder is held by GHupé

Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Paris
Date:P 2014 Dec
Mass (g):347
Pieces:2
Class:CK4
Shock stage:S2
Weathering grade:low
Fayalite (mol%):30.5-30.9
Ferrosilite (mol%):24.3-24.4
Wollastonite (mol%):0.6-0.7
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.1
Type spec location:UWB
Main mass:G. Hupe
Comments:GH-465; submitted by A. Irving
Institutions
   and collections
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
GHupé: Gregory M. Hupé, 9003 Placid Lakes Blvd., Lake Placid, FL 33852, United States; Website (private address)
Hupe: (old address—now see GHupé or AHupé) G. and A. Hupe, 2616 Lake Youngs Court SE, Renton, WA 98058., United States (private address)
Catalogs:
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.
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6968 approved meteorites from (Northwest Africa) (plus 2012 unapproved names)

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