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Northwest Africa 6830
Basic information Name: Northwest Africa 6830
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 6830
Observed fall: No
Year found: 2009
Country: (Northwest Africa)
Mass:help 730 g
Classification
  history:
Recommended:  Diogenite    [explanation]

This is 1 of 432 approved meteorites classified as Diogenite.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Comments: Approved 10 Mar 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 6830 (NWA 6830)

(Northwest Africa)

Purchased: 2009

Classification: HED achondrite (Diogenite)

History: The meteorite was purchased in 2009 from a local meteorite dealer in Erfoud, Morocco.

Physical characteristics: Five greyish fragmentsl with some fusion crust.

Petrography: Orthopyroxenite predominantly composed of blocky up to 1 mm sized orthopyroxenes grains, few olivines, and interstitial plagioclase. Minor phases include silica, troilite, and metallic iron.

Geochemistry: orthopyroxene: Fs24.9±0.3Wo2.2±0.2 (Fs24.4-25.6Wo1.7-2.6, n=30, FeO/MnO=25-29); FeO/MnO in olivine: 37-42; calcic plagioclase: An78.5±6.2 (An66.5-84.8, n=22)

Classification: diogenite (olivine-bearing)

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P 2009
Mass (g):730
Pieces:5
Class:Diogenite
Shock stage:low
Weathering grade:low
Fayalite (mol%):29.6±0.2 (n=20)
Ferrosilite (mol%):24.9
Wollastonite (mol%):2.2
Classifier:A. Greshake, MNB
Type spec mass (g):20.4
Type spec location:MNB
Main mass:Stefan Ralew
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstrasse 43, D-10115 Berlin, Germany (institutional address)
Ralew: Stefan Ralew, Kunibertstraße 29, 12524 Berlin, Germany; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 108, in preparation (2019)
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)
Nuno Chaves   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7005 approved meteorites from (Northwest Africa) (plus 2002 unapproved names)

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