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Northwest Africa 13499
Basic information Name: Northwest Africa 13499
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13499
Observed fall: No
Year found: 2020
Country: Algeria
Mass:help 177.7 g
Classification
  history:
Recommended:  Eucrite    [explanation]

This is 1 of 499 approved meteorites (plus 1 unapproved name) classified as Eucrite.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 14 Nov 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13499 (NWA 13499)

Algeria

Purchased: 2020 Jan

Classification: HED achondrite (Eucrite)

Petrography: (J. Gattacceca, CEREGE) Igneous rock with subopthitic texture. Main minerals are pyroxene (exsolved) and plagioclase with typical grain size 600 µm. Other minerals: metal, troilite, chromite, ilmenite. Vesicles up to 200 µm are present.

Geochemistry: Low-Ca pyroxene Fs42.9±0.9Wo3.7±0.9 (n=7), Ca-pyroxene Fs25.0Wo35.5 (n=2), Fs16.5Wo44.9 (n=2), FeO/MnO = 27.8±2.0 (n=11). Plagioclase An92.2±0.5Ab7.5±0.4Or0.4±0.0 (n=4).

Classification: Achondrite (eucrite).

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Guelmim
Date:P 2020 Jan
Mass (g):177.7
Pieces:1
Class:Eucrite
Weathering grade:low
Magnetic suscept.:2.45
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):21.2
Type spec location:CEREGE
Main mass:Pierre-Marie Pelé
Comments:work name PM20AC1; submitted by Jérôme Gattacceca
Institutions
   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)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
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Geography:

Algeria
Coordinates:Unknown.

Statistics:
     This is 1 of 1088 approved meteorites from Algeria (plus 26 unapproved names) (plus 4 impact craters)

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