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Northwest Africa 14755
Basic information Name: Northwest Africa 14755
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14755
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 386 g
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 280 approved meteorites classified as Lunar (feldsp. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 19 Mar 2022
Writeup from MB 111:

Northwest Africa 14755 (NWA 14755)

(Northwest Africa)

Purchased: 2021 Jun

Classification: Lunar meteorite (feldspathic breccia)

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

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Fine grained breccia composed of numerous small mineral clasts of anorthite, olivine, pigeonite, subcalcic augite and augite, plus some larger basaltic clasts, set in a very fine grained matrix containing troilite, low-Ti chromite and kamacite.

Geochemistry: Olivine (Fa23.0-45.2, FeO/MnO = 85-110, N = 5), pigeonite (Fs31.5-44.8Wo9.3-16.7, FeO/MnO = 52-60, N = 4), subcalcic augite (Fs22.5-35.4Wo27.4-23.4, FeO/MnO = 55-57, N = 2), augite (Fs22.1Wo35.6, FeO/MnO = 52), anorthite (An96.8-97.3Or0.2, N = 3).

Classification: Lunar (feldspathic breccia).

Specimens: 7.42 g including one polished slice at PSF; remainder with Mr. J. Whitcomb.

Data from:
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2021 Jun
Mass (g):386
Class:Lunar (feldsp. breccia)
Shock stage:low
Weathering grade:low
Fayalite (mol%):23.0-45.2
Ferrosilite (mol%):31.5-44.8; 22.5-35.4; 22.1
Wollastonite (mol%):9.3-16.7; 27.4-23.4; 35.6
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):21.3
Type spec location:PSF
Main mass:J. Whitcomb
Comments:Work name JW-68; submitted by A. Irving
   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)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
References: Published in Meteoritical Bulletin, no. 111, in preparation (2022)
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     This is 1 of 8559 approved meteorites from (Northwest Africa) (plus 1896 unapproved names)

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