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Northwest Africa 13495
Basic information Name: Northwest Africa 13495
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13495
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 572 g
Classification
  history:
Meteoritical Bulletin:  MB 109  (2021)  CO3
Recommended:  CO3    [explanation]

This is 1 of 653 approved meteorites (plus 2 unapproved names) classified as CO3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites
Comments: Approved 14 Nov 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13495 (NWA 13495)

(Northwest Africa)

Purchased: 2020 Feb

Classification: Carbonaceous chondrite (CO3)

Petrography: (J. Gattacceca, CEREGE) Chondrite with small chondrules (average apparent diameter 160±80 μm, n=23) and CAIs (to 300 μm) set in an abundant fine-grained iron-rich matrix (42 vol% by point counting). Opaque are metal and troilite.

Geochemistry: Olivine Fa23.9±16.3, range Fa1.4-50.0, Fa PMD = 61%, Cr2O3 0.14±0.10 wt% (n=25). Low-Ca pyroxene Fs3.4±1.9Wo2.2±0.9 (n=3).

Classification: Carbonaceous chondrite (CO3). Estimated subtype 3.2-3.5 based on Fa PMD and Cr2O3 content of ferroan olivine.

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Laayoune
Date:P 2020 Feb
Mass (g):572
Pieces:1
Class:CO3
Weathering grade:high
Fayalite (mol%):23.9±16.3 (n=25)
Ferrosilite (mol%):3.4±1.9 (n=3)
Wollastonite (mol%):2.2±0.9
Magnetic suscept.:3.71
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):33.9
Type spec location:CEREGE
Main mass:Kuntz
Comments:work name K483; 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.
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Geography: 
Coordinates:Unknown.

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

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