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Northwest Africa 14718
Basic information Name: Northwest Africa 14718
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14718
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 46 g
Classification
  history:
Meteoritical Bulletin:  MB 111  (2023)  CV3
Recommended:  CV3    [explanation]

This is 1 of 470 approved meteorites (plus 2 unapproved names) classified as CV3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites
Comments: Approved 19 Mar 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 14718 (NWA 14718)

(Northwest Africa)

Purchased: 2021

Classification: Carbonaceous chondrite (CV3)

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 30 vol% matrix). Most chondrules have apparent diameters between 0.2 and 1 mm, some up to 2.5 mm. CAIs with sizes up to 2.5 mm are observed. Type II chondrules are rare. Opaque phases are troilite, pentlandite and some (completely weathered) Fe-Ni metal.

Geochemistry: Mineral compositions and geochemistry: The mean composition of equilibrated olivine grains in matrix is Fa49. Random measurements of olivine in chondrules and chondrule fragments revealed Fa12.7±6.7 (Fa3.7-24-2); n=14. The mean composition of low-Ca pyroxene in chondrules and chondrule fragments is Fs2.2±1.2Wo1.6±1.2 (Fs0.9-4.3Wo0.6-3.8); n=10.

Classification: CV chondrite based on CAI and AOA occurrence, apparent sizes of chondrules and CAIs, and chondrule-matrix ratio. Petrologic type 3 based on the chemical variation of olivine and pyroxene.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Mauritania
Date:P 2021
Mass (g):46
Pieces:3
Class:CV3
Shock stage:C-S3
Weathering grade:high
Fayalite (mol%):12.7±6.7
Ferrosilite (mol%):2.2±1.2
Wollastonite (mol%):1.6±1.2
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. N., Schrader D. L., Chabot N. L., D’Orazio M., Goodrich C., Greshake A., Gross J., Joy K. H., Komatsu M. and Miao B. (2023) The Meteoritical Bulletin, No. 111. Meteoritics & Planetary Science 58, 901–904. ?
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)
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Revision
  history:
  This lists important revisions made to data for this record.

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