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Northwest Africa 13498
Basic information Name: Northwest Africa 13498
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13498
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 68.8 g
Classification
  history:
Meteoritical Bulletin:  MB 109  (2021)  L3
MB 112  (2024)  LL3
Recommended:  LL3    [explanation]

This is 1 of 507 approved meteorites classified as LL3.   [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 2 Nov 2020
Revised 10 Jun 2023: reclassified
Writeuphelp
Writeup from MB 109:

Northwest Africa 13498 (NWA 13498)

(Northwest Africa)

Purchased: 2020 Feb

Classification: Ordinary chondrite (L3)

Petrography: (J. Gattacceca, CEREGE) Chondrite with large, packed, and imbricated chondrules (~700 µm). Opaque minerals are metal and troilite.

Geochemistry: Olivine Fa17.6±7.8, range Fa4.2-36.9, Fa PMD = 33%, Cr2O3 0.12±0.17 wt% (n=17). low-Ca pyroxene Fs11.2±7.1Wo0.9±0.8, range Fs2.1-25.8 (n=13).

Classification: Ordinary chondrite (L3). Texture reminiscent of "cluster chondrites". L group based on magnetic susceptibility and chondrule size. Estimated subtype 3.2-3.5 based on Fa PMD and Cr2O3 content of ferroan olivine.


Writeup from MB 112:
NWA 13498, reclassification
The magnetic susceptibility measurement in MB 109 was in error. The correct value is 4.10, consistent with LL chondrites.  The texture is reminiscent of "cluster chondrites" and the chondrule size is also consistent with LL. Estimated subtype LL3.2-3.5 based on Fa PMD and Cr2O3 content of ferroan olivine.
Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Zagora, Morocco
Date:P 2020 Feb
Mass (g):68.8
Pieces:1
Class:L3
Weathering grade:W1
Fayalite (mol%):17.6±7.8 (n=17)
Ferrosilite (mol%):11.2±7.1 (n=13)
Wollastonite (mol%):0.9±0.8
Magnetic suscept.:4.92
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):13.84
Type spec location:CEREGE
Main mass:Kuntz
Comments:work name K493; 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 10 Jun 2023)
Kuntz: Fabien Kuntz, France; Website (private address)
Catalogs:
References: Published in Gattacceca J., McCubbin F. M., Grossman J., Bouvier A., Bullock E., Chennaoui Aoudjehane H., Debaille V., D’Orazio M., Komatsu M., Miao B. and Schrader D. L. (2021) The Meteoritical Bulletin, No. 109. Meteoritics & Planetary Science 56, 1626–1630.
Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Cartier C., Consolmagno G., Goodrich C., Greshake A., Gross J., Joy K. H., Miao B. and Zhang B. (2024) The Meteoritical Bulletin, no. 112. Meteoritics & Planetary Science 59, 1820–1823. ?
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Ryan Upchurch   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9914 approved meteorites from (Northwest Africa) (plus 1841 unapproved names)

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