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Northwest Africa 14000
Basic information Name: Northwest Africa 14000
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14000
Observed fall: No
Year found: 2010
Country: (Northwest Africa)
Mass:help 1030 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 29 Jan 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 14000 (NWA 14000)

(Northwest Africa)

Purchased: 2010 Jun

Classification: Carbonaceous chondrite (CVox3)

History: Purchased from a Moroccan mineral dealer at the meteorite show in Ensisheim, France.

Petrography: (K. Metzler, IfP) Chondrules, CAIs and AOAs are embedded in a dark fine-grained matrix, which mainly consists of equilibrated Fe-rich olivine (about 40 vol% matrix). Most chondrules have apparent diameters between 0.2 and 1 mm, some up to 3.5 mm. CAIs with sizes up to 4 mm are observed. Type II chondrules are rare. Opaque minerals are Ni-bearing sulfides and Ni-rich metal.

Geochemistry: Mineral compositions and geochemistry: The mean composition of equilibrated olivine grains in matrix is Fa45.5±1.6 (Fa43.5-48.9; n=10). Random measurements of olivine grains in chondrules and chondrule fragments revealed Fa13.8±12.5 (Fa0.4-42.5); n=22. Random measurements of low-Ca pyroxene in chondrules and chondrule fragments revealed Fs1.5±0.6Wo1.1±0.5 (Fs0.6-3.3Wo0.6-3.0); n=22. Ni concentration in sulfides (wt%): 18.6±3.8; n=7. Ni concentration in metal (wt%): 68.6±0.4; n=5.

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. Oxidized group (CVOx) due to the rarity of metal and the Ni content of sulfides, and oxidized Allende-like sub-group (CVoxA) due to high Ni in metal (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:
  MB111
  Table 0
  Line 0:
Place of purchase:Ensisheim, France
Date:P 2010 Jun
Mass (g):1030
Pieces:1
Class:CVox3
Shock stage:C-S2
Weathering grade:low
Fayalite (mol%):13.8±12.5
Ferrosilite (mol%):1.5±0.6
Wollastonite (mol%):1.1±0.5
Classifier:K. Metzler, IfP
Type spec mass (g):20
Type spec location:IfP
Main mass:Anonymous
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. 111, in preparation (2022)
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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