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Northwest Africa 14778
Basic information Name: Northwest Africa 14778
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14778
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 509 g
Classification
  history:
Recommended:  L3    [explanation]

This is 1 of 789 approved meteorites (plus 1 unapproved name) classified as L3.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 19 Mar 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 14778 (NWA 14778)

(Northwest Africa)

Purchased: 2021 Jun

Classification: Ordinary chondrite (L3)

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

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Well-formed, unequilibrated chondrules containing devitrified glass are set in a fine grained matrix containing altered kamacite, troilite and chromite.

Geochemistry: Olivine (Fa20.7±9.0, range Fa2.7-28.5, N = 9; Cr2O3 in ferroan olivine 0.02-0.22 wt.%, mean 0.10 wt.%, sd 0.07 wt.%, N = 7), low-Ca pyroxene (Fs19.2±11.2Wo2.3±1.8, range Fs2.8-34.8Wo0.5-5.0, N = 7). Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.37.

Classification: Ordinary chondrite (L3).

Specimens: 21.35 g including one polished thick section at PSF; remainder with Mr. J. Whitcomb.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2021 Jun
Mass (g):509
Pieces:1
Class:L3
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):20.7±9.0
Ferrosilite (mol%):19.2±11.2
Wollastonite (mol%):2.3±1.8
Magnetic suscept.:4.37
Classifier:(A. Irving, UWS and J. Boesenberg, BrownU)
Type spec mass (g):21.35
Type spec location:PSF
Main mass:J. Whitcomb
Comments:Work name JW-47; 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 8559 approved meteorites from (Northwest Africa) (plus 1896 unapproved names)

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