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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
Meteoritical Bulletin:  MB 110  (2022)  Eucrite-br
Recommended:  Eucrite-br    [explanation]

This is 1 of 240 approved meteorites classified as Eucrite-br.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 18 Sep 2021
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:
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P December 2020
Mass (g):399
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
   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)
References: Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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     This is 1 of 9825 approved meteorites from (Northwest Africa) (plus 1851 unapproved names)

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