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Northwest Africa 14978
Basic information Name: Northwest Africa 14978
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14978
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 48 g
Classification
  history:
Recommended:  CV3    [explanation]

This is 1 of 589 approved meteorites (plus 1 unapproved name) classified as CV3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites
Comments: Approved 25 May 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 14978 (NWA 14978)

(Northwest Africa)

Purchased: 2021 Aug

Classification: Carbonaceous chondrite (CV3)

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

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Well-formed chondrules (some with concentric rims, apparent diameter 980 ± 430 µm, N = 24) and amoeboid, very fine-grained CAI are set in a fine grained matrix (~40 vol.%, deep reddish-brown in thin section) containing Cr-bearing magnetite, troilite and rare kamacite. Mineral assemblages in two examined CAI are hedenbergite+anorthite+augite+olivine+magnetite and diopside+spinel+anorthite. Minor secondary calcite occurs in veinlets.

Geochemistry: Olivine (Fa26.0±27.5, range Fa5.1-77.9, N = 12), low-Ca pyroxene (Fs1.2±0.6Wo1.7±1.1, range Fs0.8-1.6Wo0.9-2.5, N = 3), pigeonite (Fs1.9Wo5.6), subcalcic augite (Fs1.4Wo34.2), magnetite (Cr2O3 0.3-1.3 wt.%, N = 5).

Classification: Carbonaceous chondrite (CV3).

Specimens: 9.7 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 Aug
Mass (g):48
Pieces:14
Class:CV3
Shock stage:S2
Weathering grade:low
Fayalite (mol%):26.0±27.5
Ferrosilite (mol%):1.2±0.6
Wollastonite (mol%):1.7±1.1
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):9.7
Type spec location:PSF
Main mass:J. Whitcomb
Comments:Work name JW-83; 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 8495 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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