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Northwest Africa 8619
Basic information Name: Northwest Africa 8619
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8619
Observed fall: No
Year found: 2014
Country: Morocco
Mass:help 23.3 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  CM2
Recommended:  CM2    [explanation]

This is 1 of 541 approved meteorites classified as CM2.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites
Comments: Approved 29 Nov 2014
Writeuphelp
Writeup from MB 103:

Northwest Africa 8619 (NWA 8619)

Morocco

Purchased: 2014

Classification: Carbonaceous chondrite (CM2)

History: Purchased in 2014 in Erfoud

Physical characteristics: One dark stone, partially crusted. Cut surface reveal a dark interior with sparse small wihitish condrules.

Petrography: (J. Gattacceca, CEREGE) Chondrules, mineral fragments and CAIs in a fine-grained Fe-rich matrix. Abundant sulfides, rare metal. Many chondrules have accretionary dust mantles. Average chondrule size 510±160 μm. Matrix:chondrules+mineral fragments abundances are 5:1 (by point couting, N=128).

Geochemistry: Olivine Fa11.4±12.7 (Fa0.5-30.3, N=8). Cr2O3 in ferroan olivine 0.46±0.10 wt% (N=6). Orthopyroxene Fs0.9±0.1Wo1.1±0.0 (N=2). Magnetic susceptibility log χ = 3.85 (χ in 10-9 m3/kg).

Classification: Carbonaceous chondrite (CM2)

Specimens: 5 g in CEREGE, main mass with Labenne

Data from:
  MB103
  Table 0
  Line 0:
Place of purchase:Erfoud
Date:P 2014
Mass (g):23.3
Pieces:1
Class:CM2
Weathering grade:low
Fayalite (mol%):11.4±12.7 (N=8)
Ferrosilite (mol%):0.9±0.0 (N=2)
Wollastonite (mol%):1.1±0.0
Magnetic suscept.:3.85
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):5
Type spec location:CEREGE
Main mass:Luc Labenne
Comments:Submitted by J. 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)
Labenne: 23, rue de Esperance, 75013 Paris, France; Website (private address; updated 29 Aug 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
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Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1505 approved meteorites from Morocco (plus 22 unapproved names) (plus 1 impact crater)

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