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Northwest Africa 12469
Basic information Name: Northwest Africa 12469
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12469
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 105.5 g
Classification
  history:
Meteoritical Bulletin:  MB 108  (2020)  CV3
Recommended:  CV3    [explanation]

This is 1 of 602 approved meteorites (plus 1 unapproved name) classified as CV3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites
Comments: Approved 22 Feb 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12469 (NWA 12469)

(Northwest Africa)

Purchased: 2017 Mar

Classification: Carbonaceous chondrite (CV3)

History: Purchased in Rissani by Pierre-Marie Pelé

Physical characteristics: Dark stone. Cut surface reveals chondrules and CAIs set in a dark matrix.

Petrography: Chondrules with average size 870 μm (n=19) and CAIs set in fine-grained matrix (48 vol% from point counting, n=168). Opaque minerals are sulfide and magnetite. Based on the structural order of the polyaromatic matter assessed by Raman spectroscopy, this meteorite is attributed a petrographic type >3.6. The Raman spectroscopy parameters of interest are FWHM-D (cm-1)=92.91±7.02, ID/IG= 1.383 ±0.005 (see Bonal et al. 2016).

Geochemistry: Olivine Fa2.7±2.5, PMD=66%, range Fa0.6-8.1 (n=6), Cr2O3 in ferroan olivine is 0.22±0.12wt% (n=5). Low-ca pyroxene Fs4.9Wo0.9 (n=1)

Classification: Carbonaceous chondrite (CV3, oxidized subgroup)

Specimens: 21.18 g and a polished section at CEREGE. Main mass with Pierre-Marie Pelé

Bibliography:
  • Bonal L., Quirico E., Flandinet L., and Montagnac G. (2016) Thermal history of type 3 chondrites from the Antarctic meteorite collection determined by Raman spectroscopy of their polyaromatic carbonaceous matter. Geochim. Cosmochim. Acta 189 312-337. (link)
Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Rissani
Date:P 2017 Mar
Mass (g):105.52
Pieces:1
Class:CV3
Weathering grade:moderate
Fayalite (mol%):2.7±2.5 (n=6)
Ferrosilite (mol%):4.9 (n=1)
Wollastonite (mol%):0.9
Magnetic suscept.:4.59
Classifier:J. Gattacceca, L. Krämer Ruggiu, CEREGE
Type spec mass (g):21.18
Type spec location:CEREGE
Main mass:Pierre-Marie Pelé
Comments:Work name PM323; submitted by Lisa Kraemer Ruggiu
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. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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