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Northwest Africa 14346
Basic information Name: Northwest Africa 14346
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14346
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 521 g
Classification
  history:
Recommended:  CVox3    [explanation]

This is 1 of 16 approved meteorites classified as CVox3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites
Comments: Approved 11 Nov 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14346 (NWA 14346)

(Northwest Africa)

Purchased: 2021

Classification: Carbonaceous chondrite (CVox3)

Petrography: (K. Metzler, IfP) Chondrules, CAIs and AOAs are embedded in a dark fine-grained matrix (~30-40 vol% matrix). Most chondrules have apparent diameters between 0.2 and 1 mm, some up to ~2 mm. CAIs with sizes up to 1.2 mm are observed. Type II chondrules are rare. Opaque minerals are sulfides with varying Ni contents, traces of Ni-rich metal, and some magnetite. Most metal is oxidized by terrestrial weathering.

Geochemistry: Mineral compositions and geochemistry: The mean composition of olivine in chondrules and chondrule fragments is Fa8.4±6.4 (Fa1.4-27.9); n=18. The mean composition of low-Ca pyroxene in chondrules and chondrule fragments is Fs1.9±1.3 Wo1.2±0.3 (Fs0.7-4.6 Wo0.9-1.7); n=15. Mean Ni concentration in sulfides (wt%): 10.8±11.6 (0.0-26.7); n=8. Ni concentration in metal (wt%): 66.0; n=1.

Classification: CV chondrite based on CAI and AOA occurrence, apparent sizes of chondrules and CAIs, chondrule-matrix ratio, and mineral chemistry. Petrologic type 3 based on the chemical variation of olivine and pyroxene. Mean Ni concentrations in metal and sulfide are in the range of the oxidized subgroup Gattacceca et al., 2020.

Bibliography:
  • Gattacceca J.,Bonal L.,Sonzognia C., and Longereya J. (2020) CV chondrites: More than one parent body. Earth Planet. Sci. Letts. 547, 116467. (link)
Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Mauritania
Date:P 2021
Mass (g):521
Pieces:many
Class:CVox3
Shock stage:C-S2
Weathering grade:high
Fayalite (mol%):8.4±6.4
Ferrosilite (mol%):1.9±1.3
Wollastonite (mol%):1.2±0.3
Classifier:K. Metzler, IfP
Type spec mass (g):20
Type spec location:IfP
Main mass:Gregor Pacer, Bad Bellingen, Germany
Comments:Submitted by K. Metzler, IfP
Institutions
   and collections
IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8138 approved meteorites from (Northwest Africa) (plus 1941 unapproved names)

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