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Northwest Africa 14927
Basic information Name: Northwest Africa 14927
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14927
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 83 g
Classification
  history:
Recommended:  CO3    [explanation]

This is 1 of 636 approved meteorites (plus 1 unapproved name) classified as CO3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites
Comments: Approved 9 May 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 14927 (NWA 14927)

(Northwest Africa)

Purchased: 2021 Oct

Classification: Carbonaceous chondrite (CO3)

History: Purchased by Jason Whitcomb in October 2021 from an Algerian dealer.

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Well-formed unequilibrated chondrules (some glass-bearing), mineral fragments and very fine-grained CAI are set in a fine grained matrix (~40 vol.%, deep red-brown in thin section) containing kamacite, troilite, chromite and magnetite. Most chondrules are relatively small, but some much larger ones (up to 2 mm) are present (overall apparent diameter range 350 ± 400 µm, N = 25).

Geochemistry: Olivine (Fa19.1±17.7, range Fa0.4-39.3, N = 8; Cr2O3 in ferroan olivine 0.23-0.58 wt.%, mean 0.36 wt.%, sd 0.12 wt.%, N = 6), low-Ca pyroxene (Fs3.8±2.2Wo1.9±1.7, range Fs1.3-6.4Wo0.3-5.0, N = 9), Al-Ti-diopside (Fs0.6Wo58.5, Al2O3 21.6 wt.%, TiO2 1.1 wt.%).

Classification: Carbonaceous chondrite (CO3).

Specimens: 17.6 g including one polished thin section at PSF; remainder with Mr. J. Whitcomb.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2021 Oct
Mass (g):83
Pieces:1
Class:CO3
Shock stage:S2
Weathering grade:low
Fayalite (mol%):19.1±17.7
Ferrosilite (mol%):3.8±2.2
Wollastonite (mol%):1.9±1.7
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):17.6
Type spec location:PSF
Main mass:J. Whitcomb
Comments:Work name JW-122; 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 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 9116 approved meteorites from (Northwest Africa) (plus 1873 unapproved names)

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