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Northwest Africa 8616
Basic information Name: Northwest Africa 8616
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8616
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 150 g
Meteoritical Bulletin:  MB 103  (2014)  CV3
Recommended:  CV3    [explanation]

This is 1 of 627 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 23 Nov 2014
Writeup from MB 103:

Northwest Africa 8616 (NWA 8616)

(Northwest Africa)

Purchased: February 2013

Classification: Carbonaceous chondrite (CV3)

Physical characteristics: The studied mass of 32 g (the type specimen) shows rather large chondrules and some relatively large white inclusions

Petrography: In thin section, many chondrules of various kinds (BO, PO, POP; about 1 mm in apparent diameter), fine-grained, olivine-rich aggregates and CAIs are embedded in a fine-grained, dark brown matrix (roughly 40 vol%). The matrix is quite porous and rich in olivine. Fe,Ni-rich metal and troilite are less abundant; severe weathering has replaced about 50% of the metal by terrestrial weathering products (W2-3). The shock stage is S2 due to the undulatory extinction and the lack of planar fractures in olivine.

Geochemistry: Chondrule olivine: Fo94.1±5.1 (mostly Fo95-100; range: Fo75.7-99.7, n=37); mean matrix olivine: Fo45.3±2.7 (n=20); chondrule low-Ca pyroxene, En97.3±1.3 (mostly En95-98; range: En92.6-98.4Fs0.7-4.1Wo0.3-3.3, n=21).

Data from:
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P February 2013
Mass (g):150
Shock stage:S2
Weathering grade:moderate
Fayalite (mol%):5.9±5.1
Ferrosilite (mol%):2.7±1.3
Classifier:M. Chaussidon, IPGP; M. Weyrauch and A. Bischoff, IfP
Type spec mass (g):32
Type spec location:IPGP
Main mass:Luc Labenne
Comments:Submitted by Marc Chaussidon
   and collections
IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)
IPGP: Institute de Physique du Globe de Paris, 1 rue Jussieu, 75252 Paris, Cedex 05, France (institutional address; updated 3 Nov 2014)
Labenne: 23, rue de Esperance, 75013 Paris, France; Website (private address; updated 29 Aug 2012)
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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     This is 1 of 9570 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)
Synonymshelp: Northwest Africa 10105 (Duplicate meteorite)
NWA 10105 (Duplicate meteorite)

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