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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:
Recommended:  CO3    [explanation]

This is 1 of 589 approved meteorites (plus 1 unapproved name) 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 29 Oct 2018)
Kuntz: Fabien Kuntz, France; Website (private address)
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 8025 approved meteorites from (Northwest Africa) (plus 1951 unapproved names)

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