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Northwest Africa 7490
Basic information Name: Northwest Africa 7490
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7490
Observed fall: No
Year found: 2012
Country: (Northwest Africa)
Mass:help 1050 g
Classification
  history:
Meteoritical Bulletin:  MB 101  (2012)  Diogenite
Recommended:  Diogenite    [explanation]

This is 1 of 411 approved meteorites classified as Diogenite.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Comments: Approved 12 Dec 2012
Writeuphelp
Writeup from MB 101:

Northwest Africa 7490 (NWA 7490)

(Northwest Africa)

Purchased: 2012

Classification: HED achondrite (Diogenite)

Petrography: The meteorite displays a cumulate texture of dominantly large orthopyroxene crystals, subordinate calcic plagioclase, and minor olivine. Accessory minerals include chromite and troilite; no eucrite clasts were found. Orthopyroxene Fs24.1-26Wo3.4-4.6, FeO/MnO=27-33; olivine Fa27.3; plagioclase An82.9, range 77.1-91.6.

Data from:
  MB101
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P 2012
Mass (g):1050
Pieces:>10
Class:Diogenite
Shock stage:low
Weathering grade:low
Fayalite (mol%):27.3
Ferrosilite (mol%):24.1-26
Wollastonite (mol%):3.4-4.6
Classifier:Ansgar Greshake, MNB
Type spec mass (g):20.2
Type spec location:MNB
Main mass:Marcin Cimala
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstrasse 43, D-10115 Berlin, Germany (institutional address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 101, MAPS 50, 1661, September 2015
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Gregor H.   
Piotr gural100   
Sans   
Woreczko Jan & Wadi   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6324 approved meteorites from (Northwest Africa) (plus 2026 unapproved names)

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