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Northwest Africa 6484
Basic information Name: Northwest Africa 6484
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 6484
Observed fall: No
Year found: 2010
Country: (Northwest Africa)
Mass:help 688 g
Meteoritical Bulletin:  MB 99  (2011)  Lodranite
Recommended:  Lodranite    [explanation]

This is 1 of 93 approved meteorites classified as Lodranite.   [show all]
Search for other: Acapulcoite-lodranite family, Lodranites, and Primitive achondrites
Comments: Approved 2 Jun 2011
Writeup from MB 99:

Northwest Africa 6484 (NWA 6484)

(Northwest Africa)

Purchased: June 2010

Classification: Primitive achondrite (Lodranite)

History: Purchased in Sainte Marie (France) in 2010.

Physical characteristics: A greenish-brown 688 g stone without fusion crust.

Petrography: (C. A. Lorenz; Vernad) Unbrecciated, medium-grained achondritic rock with equigranular texture composed of olivine and orthopyroxene with minor feldspar and clinopyroxene, and rare FeNi metal, chromite, and troilite.

Geochemistry: (N. N. Kononkova, Vernad) EMP data: Olivine Fo88.1 (Fe/Mn = 21.7); orthopyroxene En85.9Wo2.52 (Fe/Mn = 13.5; mg# = 88); En52.3Wo42.8; feldspar Ab75.4An22.7- Ab84An13.5. Oxygen isotopic composition (Franchi I. A., OU, Laser fluorination): δ17O=1.635, δ18O=4.542, Δ17O=-0.727 (per mil).

Classification: Achondrite (lodranite). Moderate weathering.

Specimens: A total of 78.3 g sample and one polished section are on deposit at Vernad. The anonymous buyer holds the main mass.

Data from:
  Table 0
  Line 0:
Place of purchase:Sainte Marie, France
Date:P June 2010
Mass (g):688
Weathering grade:moderate
Fayalite (mol%):11.9
Ferrosilite (mol%):11.6
Wollastonite (mol%):2.5
Classifier:C. A. Lorenz, Vernad
Type spec mass (g):78.3
Type spec location:Vernad
Main mass:anonymous
Comments:Submitted by C. A. Lorenz
Plots: O isotopes:  
   and collections
OU: Planetary and Space Sciences Department of Physical Sciences The Open University Walton Hall Milton Keynes MK7 6AA United Kingdom, United Kingdom (institutional address; updated 8 Dec 2011)
Vernad: Vernadsky Institute of Geochemistry and Analytical Chemistry, Russia (institutional address; updated 21 Feb 2016)
References: Published in Meteoritical Bulletin, No. 99, April 2012, MAPS 47, E1-E52 (2012) [published online only]
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     This is 1 of 9570 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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