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Northwest Africa 13500
Basic information Name: Northwest Africa 13500
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13500
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 24.6 g
Classification
  history:
Recommended:  L(LL)3    [explanation]

This is 1 of 15 approved meteorites classified as L(LL)3.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 2 Nov 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13500 (NWA 13500)

(Northwest Africa)

Purchased: 2020 Jan

Classification: Ordinary chondrite (L(LL)3)

Petrography: (J. Gattacceca, CEREGE) Chondrite with "cluster chondrite" texture [Metzler K., 2015, MAPS 47:2193-2217]. Average apparent chondrule diameter 720±300 µm (n=34).

Geochemistry: Olivine Fa16.9±10.6, range Fa4.5-36.7, Fa PMD = 56%, Cr2O3 0.09±0.13 wt% (n=14). Low-Ca pyroxene Fs14.8±7.7Wo1.5±1.5 (n=5).

Classification: Ordinary chondrite L(LL)3. The L group is favored based on magnetic susceptibility, but neither chondrule size nor magnetic susceptibility can exclude the LL classification. Hence the L(LL) classification. Estimated subtype 3.2-3.5 based on Fa PMD and the Cr2O3 content of ferroan olivine.

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Guelmim
Date:P 2020 Jan
Mass (g):24.64
Pieces:1
Class:L(LL)3
Weathering grade:W4
Magnetic suscept.:4.17
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):5.22
Type spec location:CEREGE
Main mass:Pierre-Marie Pelé
Comments:work name PM20AC2; 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:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7579 approved meteorites from (Northwest Africa) (plus 1969 unapproved names)

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