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Northwest Africa 13980
Basic information Name: Northwest Africa 13980
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13980
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 502 g
Classification
  history:
Recommended:  CK3    [explanation]

This is 1 of 75 approved meteorites classified as CK3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CK chondrites, CK3 chondrites, and CV-CK clan chondrites
Comments: Approved 26 Dec 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 13980 (NWA 13980)

(Northwest Africa)

Purchased: 2021

Classification: Carbonaceous chondrite (CK3)

History: Purchased by Grant Harkness in 2021 from a Moroccan dealer.

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Breccia composed of Type 3 clasts within a fine grained matrix (very similar to the matrix in the clasts). The clasts consist of separated, well-formed, unequilibrated Cr-magnetite-bearing chondrules (some with concentric rims, apparent diameter 1290 ± 640 µm, N = 25) plus some irregularly-shaped, fine-grained CAI set in a fine grained matrix containing stained Cr-magnetite, intermediate plagioclase, chromite and chlorapatite. Orthopyroxene is apparently absent but augite is quite abundant, and both devitrified glass and feldspar are present.

Geochemistry: Olivine (Fa16.7±14.2, range Fa1.1-32.8, N = 6), augite (Fs12.4±13.3Wo49.6±1.1, range Fs1.3-38.3Wo48.4-51.1, N = 6), Al-Ti-diopside in CAI (Fs0.7Wo54.2, Al2O3 8.7 wt.%, TiO2 1.1 wt.%), plagioclase (An21.7Or3.3; An29.9Or2.4; N = 2), magnetite (Cr2O3 2.5-4.2 wt.%, N = 6).

Classification: Carbonaceous chondrite (CK3).

Specimens: 26 g including one polished thin section is at PSF; remainder in the Harkness Collection.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2021
Mass (g):502
Pieces:6
Class:CK3
Shock stage:S2
Weathering grade:low
Fayalite (mol%):16.7±14.2
Ferrosilite (mol%):12.4±13.3
Wollastonite (mol%):49.6±1.1
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):26
Type spec location:PSF
Main mass:Harkness Collection
Comments:Work name HC-22; submitted by A. Irving
Institutions
   and collections
PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
BrownU: Brown University Providence, RI 02912, United States (institutional address; updated 7 Sep 2019)
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 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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