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| Northwest Africa 6592 | |||||||||||||||||||||||||||||||
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| 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:  15.9 g | ||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 94 approved meteorites classified as Lodranite. [show all] Search for other: Acapulcoite-lodranite family, Lodranites, and Primitive achondrites | ||||||||||||||||||||||||||||||
| Comments: | Approved 4 May 2011 | ||||||||||||||||||||||||||||||
| Writeup |
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: MB99 Table 0 Line 0: |
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| Plots: | O isotopes: | ||||||||||||||||||||||||||||||
| Institutions 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) |
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| Catalogs: |
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| References: | Published in Meteoritical Bulletin, No. 99, April 2012, MAPS 47, E1-E52 (2012) [published online only]
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| Geography: |
Statistics: This is 1 of 9914 approved meteorites from (Northwest Africa) (plus 1841 unapproved names) | ||||||||||||||||||||||||||||||