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Northwest Africa 8438
Basic information Name: Northwest Africa 8438
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8438
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 16 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  Howardite
Recommended:  Howardite    [explanation]

This is 1 of 386 approved meteorites classified as Howardite.   [show all]
Search for other: Achondrites, HED achondrites, and Howardites
Comments: Approved 6 Jun 2014
Writeuphelp
Writeup from MB 103:

Northwest Africa 8438 (NWA 8438)

(Northwest Africa)

Purchased: 2013 Jun

Classification: HED achondrite (Howardite)

History: Purchased in 2013 in Ensisheim

Physical characteristics: Cut surface reveals a dark brecciated interior.

Petrography: (J. Gattacceca, CEREGE) Brecciated crystalline rock composed mostly of pyroxene and plagioclase, with accessory silica, chromite, ilmenite, troilite, metal. Both eucrite and diogenite material are present. Some melt clasts are present.

Geochemistry: Eucrite: Orthopyroxene Fs53.7-62.2Wo10.8-3.2, FeO/MnO = 32.7, diogenite clasts: Orthopyroxene Fs26.9Wo3.0, FeO/MnO = 32.7. Plagioclase An93.8 Or0.2. Magnetic susceptibility log χ = 3.32  (χ in 10-9 m3/kg).

Classification: Achondrite (howardite). Strong weathering.

Specimens: 4 g in CEREGE, main mass with Labenne

Data from:
  MB103
  Table 0
  Line 0:
Place of purchase:Ensisheim
Date:P 2013 Jun
Mass (g):16
Pieces:1
Class:Howardite
Weathering grade:high
Ferrosilite (mol%):53.7-62.2 (eucrite) , 26.9 (diogenite)
Wollastonite (mol%):10.8-3.2 (eucrite), 3.0 (diogenite)
Magnetic suscept.:3.32
Classifier:J. Gattacceca, M. Aboulahris, CEREGE
Type spec mass (g):4
Type spec location:CEREGE
Main mass:Luc Labenne
Comments:Submitted by J. Gattacceca
Institutions
   and collections
CEREGE: CEREGE BP 80 Avenue Philibert, Technopole de l'Arbois 13545 Aix-en-Provence Cedex 4 France, France (institutional address; updated 29 Oct 2018)
Labenne: 23, rue de Esperance, 75013 Paris, France; Website (private address; updated 29 Aug 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7483 approved meteorites from (Northwest Africa) (plus 1994 unapproved names)

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