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Northwest Africa 14016
Basic information Name: Northwest Africa 14016
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14016
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 29.4 kg
Classification
  history:
Recommended:  Eucrite-melt breccia    [explanation]

This is 1 of 51 approved meteorites classified as Eucrite-melt breccia.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 5 Jun 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14016 (NWA 14016)

(Northwest Africa)

Purchased: 2020 Jun

Classification: HED achondrite (Eucrite, melt breccia)

History: Two identical stones of 19200 g and 10200 g were purchased in June 2020 by Aziz Habibi from a Mauritanian dealer. The larger stone was subsequently acquired by Marcin Cimala.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Monomict breccia composed of angular eucrite clasts with intergranular texture in a fairly sparse melt rock matrix (dark gray in thin section) containing entrained crystalline debris. Minerals are exsolved pigeonite, calcic plagioclase, silica polymorph, chromite (some grains compositionally zoned), ilmenite, troilite and Ni-free Fe metal. Some thin dark shock veinlets crosscut clasts, and secondary calcite is present as veins and also infilling cavities in the matrix.

Geochemistry: Low-Ca pyroxene host (Fs58.7-60.7Wo2.3-4.4, FeO/MnO = 30-32, N = 4), augite exsolution lamellae (Fs25.7-26.8Wo42.6-43.6, FeO/MnO = 31-32, N = 4), plagioclase (An88.1-90.1Or0.5-0.3, N = 4).

Classification: Eucrite (monomict melt-matrix breccia).

Specimens: 29 g including one polished thin section at UWB; remaining material held by Mr. M. Cimala (10900 g) and Mr. A. Habibi (10170 g).

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Mauritania
Date:P 2020 Jun
Mass (g):29400
Pieces:2
Class:Eucrite-melt breccia
Shock stage:high
Weathering grade:low
Ferrosilite (mol%):58.7-60.7; 25.7-26.8
Wollastonite (mol%):2.3-4.4; 42.6-43.6
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):29.9
Type spec location:UWB
Main mass:A. Habibi
Comments:Work name AH 1005; submitted by A. Irving
Institutions
   and collections
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)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7937 approved meteorites from (Northwest Africa) (plus 1960 unapproved names)

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