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Northwest Africa 14209
Basic information Name: Northwest Africa 14209
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14209
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 399 g
Classification
  history:
Recommended:  Eucrite-br    [explanation]

This is 1 of 191 approved meteorites classified as Eucrite-br.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 18 Sep 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14209 (NWA 14209)

(Northwest Africa)

Purchased: December 2020

Classification: HED achondrite (Eucrite, brecciated)

History: Nine stones totaling 399 g were purchased in December 2020 by Miguel Angel Contreras Gomez from a meteorite dealer in Morocco.

Physical characteristics: The stones display a distinctive brown fusion crust and grey interior when cut.

Petrography: (D. Sheikh, Cascadia) This sample is a breccia composed primarily of sub-angular to sub-rounded basaltic and cumulate eucrite clasts (up to 1 cm) set within a fine-grained matrix containing accessory ilmenite, Fe-Ni metal, and SiO2-rich glass.

Geochemistry: Low-Ca pyroxene (Fs55.1±2.2Wo3.8±0.8, range Fs51.0-57.5Wo2.6-4.9, Fe/Mn=32±4, n=6), Pigeonite (Fs46.3±3.0Wo14.9±4.1, range Fs40.0-52.4Wo6.4-24.6, Fe/Mn=31±4, n=43), Augite (Fs37.3±1.5Wo28.4±1.5, range Fs36.3-39.1Wo26.6-29.3, Fe/Mn=32±4, n=3), Calcic Plagioclase (An89.3±1.5, range An85.5-92.4, n=33).

Classification: HED Achondrite (eucrite, brecciated).

Specimens: 21.6 g and a thin section at Cascadia; main mass with Miguel Angel Contreras Gomez.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P December 2020
Mass (g):399
Pieces:9
Class:Eucrite-br
Shock stage:moderate
Weathering grade:low
Ferrosilite (mol%):55.1±2.2, 46.3±3.0, 37.3±1.5
Wollastonite (mol%):3.8±0.8, 14.9±4.1, 28.4±1.5
Classifier:D. Sheikh, Cascadia
Type spec mass (g):21.6
Type spec location:Cascadia
Main mass:Miguel Angel Contreras Gomez
Comments:Submitted by Daniel Sheikh
Institutions
   and collections
Cascadia: Cascadia Meteorite Laboratory, Portland State University, Department of Geology, Room 17 Cramer Hall, 1721 SW Broadway, Portland, OR 97201, United States; Website (institutional address; updated 28 Oct 2011)
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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