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Northwest Africa 4678
Basic information Name: Northwest Africa 4678
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 4678
Observed fall: No
Year found: 2006
Country: Morocco
Mass:help 3.6 g
Classification
  history:
Meteoritical Bulletin:  MB 92  (2007)  Diogenite
Recommended:  Diogenite    [explanation]

This is 1 of 545 approved meteorites classified as Diogenite.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Comments: Approved 24 Jul 2007
Writeuphelp
Writeup from MB 92:

Northwest Africa 4678

Morocco

Find: August 2006

Achondrite (diogenite)

History: F. Béroud purchased the meteorite in August 2006 in Rissani, Morocco.

Physical characteristics: A 3.60 g individual, oriented, nearly complete stone with black fusion crust over approximately 90% of the specimen.

Petrography: (A. Seddiki, UO and UJM; B. Moine, J.Y. Cottin, UJM; B. Devouard, UBP; M. Denise, MNHNP). The stone is composed predominantly of Ca-poor pyroxene with small inclusions of spinel and troilite.

Mineral compositions and geochemistry: Ca-poor pyroxene (Fs29.8-28.6Wo3.5-4.1), pyroxene (Fe/Mn = 26.4-31.8 [atomic]). Spinel Ti-poor chromite (Cr2O3 = 56 wt%).

Classification:Achondrite (diogenite); minimum shock, minimal weathering.

Type specimens: The main mass of 3.34 g is deposited at MNHNP and one thin section is kept at UBP.

Data from:
  MB92
  Table 2
  Line 121:
Place of purchase:Rissani, Morocco
Date:Aug-2006
Mass (g):3.6
Pieces:1
Class:Dio
Type spec mass (g):3.34
Institutions
   and collections		 MNHNP: Museum National d'Histoire Naturelle, IMPMC-CP52, 57 rue Cuvier, 75005 Paris, France, France; Website (institutional address)
UBP: Universite Blaise Pascal, Clermont-Ferrand, France (institutional address)
UJM: Université Jean Monnet, Saint-Etienne, France (institutional address)
UO: Université d'Oran Es-senia, Algeria (institutional address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 92, MAPS 42, 1647-1694 (2007)
Find references in NASA ADS:
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Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 2163 approved meteorites from Morocco (plus 32 unapproved names) (plus 1 impact crater)

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