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Northwest Africa 10240
Basic information Name: Northwest Africa 10240
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10240
Observed fall: No
Year found: 2010
Country: (Northwest Africa)
Mass:help 242 g
Meteoritical Bulletin:  MB 105  (2016)  LL7
Recommended:  LL7    [explanation]

This is 1 of 68 approved meteorites classified as LL7.   [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 30 Apr 2016
Writeup from MB 105:

Northwest Africa 10240 (NWA 10240)

(Northwest Africa)

Purchased: 2010 June

Classification: Ordinary chondrite (LL7)

History: Purchased in June 2010 at Saint-Marie-aux-Mines

Physical characteristics: A single crusted stone. Cut surface reveals angular dark clasts up to 5 mm in a lighter matrix.

Petrography: Highly recrystallized chondrite with triple junctions and typical grain size ~100 μm. Rare relict barred olivine chondrules to 1 mm in diameter. Main minerals are olivine, pyroxenes, plagioclase (mean size 100 μm, to 200 μm), chromite (to 100 μm), Ca-phosphate (to 500 μm), FeNi metal. The rock is brecciated and contains dark clasts up to 5 mm.

Geochemistry: Olivine Fa32.0±0.3 (N=5), orthopyroxene Fs26.3±0.1Wo2.8±0.2 (N=3), augite Fs11.1Wo43.7 (N=1), plagioclase An10.5Ab84.8Or4.7 (N=2), chromite Cr#=0.87±0.01 (N=3).

Classification: LL7 based on Wo content of orthopyroxene and plagioclase grain size. Brecciated.

Specimens: 23 g in CEREGE, main mass with Labenne

Data from:
  Table 0
  Line 0:
Place of purchase:Sainte-Marie-aux-Mines
Date:P 2010 June
Mass (g):242
Weathering grade:W3
Fayalite (mol%):32.0±0.3
Ferrosilite (mol%):26.3±0.1
Wollastonite (mol%):2.8±0.2
Magnetic suscept.:3.05
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):23
Type spec location:CEREGE
Main mass:Labenne Luc
Comments:Submitted by J. Gattacceca
   and collections
CEREGE: CEREGE BP 80 Avenue Philibert, Technopole de l'Arbois 13545 Aix-en-Provence Cedex 4 France, France (institutional address; updated 29 Oct 2018)
Labenne: 23, rue de Esperance, 75013 Paris, France; Website (private address; updated 29 Aug 2012)
References: Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
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     This is 1 of 7579 approved meteorites from (Northwest Africa) (plus 1969 unapproved names)

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