MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 19 Jun 2024
Search for: Search type: Search limits: Display: Publication:
Text help
Starts with
Sounds like
Falls  Non-NWAs
What's new
  in the last:
Limit to approved meteorite names
Search text:  
Northwest Africa 6592
Basic information Name: Northwest Africa 6592
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 6592
Observed fall: No
Year found: 2007
Country: (Northwest Africa)
Mass:help 15.9 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 4 May 2011
Writeup from MB 99:

Northwest Africa 6592 (NWA 6592)

(Northwest Africa)

Purchased: May 2007

Classification: Primitive achondrite (Lodranite)

History: A single stone was bought in May 2007 from a nomad who had found it in the Hamada du Guir area across the Moroccan-Algerian border.

Physical characteristics: A single 15.9 g oriented stone covered with fresh fusion crust showing flow lines.

Petrography: (J. Gattacceca, CEREGE): Coarse-grained (1 to 2 mm) mineral aggregate with triple junctions. Modal abundances: olivine 63.6%, orthopyroxene 14.0%, kamacite 11.2%, clinopyroxene 5.6%, feldspar 3.6%, chromite 1.4%, Ca phosphate 0.4%, troilite 0.2%. Magnetic susceptibility log χ = 5.70 (χ in 10-9 m3/kg).

Geochemistry: (J. Gattacceca, CEREGE) Olivine Fa13.9. Orthopyroxene Fs13.1Wo2.9. Clinopyroxene Fs7.2Wo36.6 containing 1.3% Cr2O3. Chromite Cr/(Cr+Al) = 0.85. Oxygen isotopes of a 1.5 mg olivine sample (C. Suavet, C. Sonzogni, CEREGE): δ17O = 1.04 ‰, δ18O = 3.98 ‰, and Δ17O = -1.03 ‰.

Classification: Achondrite (lodranite). Minimal weathering.

Specimens: CEREGE holds 3.2 g distributed between a slice and a polished section. P. Thomas holds the main mass.

Data from:
  Table 0
  Line 0:
Origin or pseudonym:Hamada du Guir
Date:P May 2007
Mass (g):15.85
Weathering grade:W1
Fayalite (mol%):13.9
Ferrosilite (mol%):7.2
Wollastonite (mol%):36.6
Magnetic suscept.:5.70
Classifier:J. Gattacceca
Type spec mass (g):3.2
Type spec location:CEREGE
Main mass:P. Thomas
Comments:Submitted by J. Gattacceca
Plots: O isotopes:  
   and collections
CEREGE: CEREGE BP 80 Avenue Philibert, Technopole de l'Arbois 13545 Aix-en-Provence Cedex 4 France, France (institutional address; updated 10 Jun 2023)
References: Published in Meteoritical Bulletin, No. 99, April 2012, MAPS 47, E1-E52 (2012) [published online only]
Find references in NASA ADS:
Find references in Google Scholar:

     This is 1 of 9776 approved meteorites from (Northwest Africa) (plus 1862 unapproved names)

Direct link to this page