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Northwest Africa 14049
Basic information Name: Northwest Africa 14049
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14049
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 1249 g
Classification
  history:
Recommended:  Diogenite-pm    [explanation]

This is 1 of 49 approved meteorites classified as Diogenite-pm.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Comments: Approved 6 Jul 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14049 (NWA 14049)

(Northwest Africa)

Purchased: 2020 Nov

Classification: HED achondrite (Diogenite, polymict)

History: Purchased by Luc Labenne in November 2020 from a Moroccan dealer.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Complex polymict breccia composed of angular mineral clasts plus some lithic clasts in a fine grained matrix. Mineral clasts include diogenitic orthopyroxene (exhibiting undulose extinction and with a range of compositions), exsolved eucritic pigeonite (with hosts and exsolution lamellae of several different compositions), olivine, anorthite and calcic plagioclase (polycrystalline). Rare lithic clasts include diabasic eucrite (composed predominantly of shock-darkened pyroxene and maskelynite) and gabbroic eucrite (containing polycrystalline calcic plagioclase). The overall proportion of eucritic material is estimated to be <10 vol.%. Accessory phases include silica polymorph, troilite and chromite (with variable Ti and V contents). Secondary calcite and barite are present.

Geochemistry: Diogenitic orthopyroxene (Fs19.5-30.6Wo1.1-2.7, FeO/MnO = 26-37), pigeonite (Fs35.9-48.4Wo6.0-12.5, FeO/MnO = 28-32, N = 3), olivine (Fa36.7, FeO/MnO = 52), low-Ca pyroxene host (Fs54.3Wo4.6, FeO/MnO = 30), augite exsolution lamella (Fs26.0Wo40.5, FeO/MnO = 29), low-Ca pyroxene host (Fs40.4Wo2.8, FeO/MnO = 27), augite exsolution lamella (Fs17.4Wo42.9, FeO/MnO = 24), anorthite (An97.0Or0.0), calcic plagioclase (An77.3-88.6Or1.7-0.4, N = 3).

Classification: Diogenite (polymict breccia, shocked).

Specimens: 20.9 g including one polished thin section at UWB; remainder with Mr. L. Labenne.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2020 Nov
Mass (g):1249
Pieces:1
Class:Diogenite-pm
Shock stage:high
Weathering grade:low
Fayalite (mol%):36.7
Ferrosilite (mol%):19.5-30.6; 47.8-48.4; 40.4; 54.3; 17.4; 26.0
Wollastonite (mol%):1.1-2.7; 11.0-12.5; 2.8; 4.6; 42.9; 40.5
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):20.9
Type spec location:UWB
Main mass:L. Labenne
Comments:Work name LAB21-1; 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)
Labenne: 23, rue de Esperance, 75013 Paris, France; Website (private address; updated 29 Aug 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 7912 approved meteorites from (Northwest Africa) (plus 1974 unapproved names)

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