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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 25 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 Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8745 approved meteorites from (Northwest Africa) (plus 1880 unapproved names)

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