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Northwest Africa 14201
Basic information Name: Northwest Africa 14201
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14201
Observed fall: No
Year found: 2020
Country: Algeria
Mass:help 33 g
Meteoritical Bulletin:  MB 110  (2022)  Howardite
Recommended:  Howardite    [explanation]

This is 1 of 452 approved meteorites classified as Howardite.   [show all]
Search for other: Achondrites, HED achondrites, and Howardites
Comments: Approved 31 Oct 2021
Writeup from MB 110:

Northwest Africa 14201 (NWA 14201)


Find: 2020

Classification: HED achondrite (Howardite)

History: Purchased by Geologist Juan Avilés Poblador in 2021 from a meteorite dealer in Algeria.

Physical characteristics: Single stone with minor fusion crust. An interior view of a cut slice reveals an assortment of angular to sub-rounded clasts with variable color.

Petrography: (D. Sheikh, Cascadia) This sample is a polymict breccia composed primarily of sub-rounded tabular and blocky diogenite clasts dominated by orthopyroxene and minor olivine (up to 3.5 mm, ~80 vol. %), and minor quantities of angular to sub-angular basaltic (up to 3.5 mm, ~15 vol. %) and cumulate (up to 2 mm, ~5 vol. %) eucrite clasts containing low-Ca pyroxene, pigeonite (some exsolved), augite (some exsolved), and calcic plagioclase. Accessory phases (< 1 vol. %) include Fe-Ni metal, troilite, and chromite.

Geochemistry: Diogenite clasts: Orthopyroxene (Fs23.7±3.0Wo3.1±1.0, range Fs20.9-30.3Wo2.0-5.9, Fe/Mn=28±4, n=17), Olivine (Fa26.9, n=1). Eucrite clasts: Low-Ca Pyroxene (Fs51.7±8.1Wo3.8±1.4, range Fs35.7-59.9Wo1.7-5.7, Fe/Mn=30±4, n=24), Pigeonite (Fs47.9±9.9Wo10.2±5.3, range Fs28.9-57.8Wo6.3-23.3, Fe/Mn=29±4, n=14), Augite (Fs30.4±8.0Wo35.9±5.0, range Fs18.8-39.5Wo27.9-40.5, Fe/Mn=30±3, n=5), Calcic Plagioclase (An91.2±0.9, range An89.4-92.4, n=11).

Classification: HED Achondrite (Howardite).

Specimens: 6.6 g and a thin section at Cascadia; main mass with Juan Avilés Poblador.

Data from:
  Table 0
  Line 0:
Mass (g):33
Shock stage:moderate
Weathering grade:low
Fayalite (mol%):26.9
Ferrosilite (mol%):23.7±3.0, 51.7±8.1, 47.9±9.9, 30.4±8.0
Wollastonite (mol%):3.1±1.0, 3.8±1.4, 10.2±5.3, 35.9±5.0
Classifier:D. Sheikh, Cascadia
Type spec mass (g):6.6
Type spec location:Cascadia
Main mass:Juan Aviles Poblador
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 1364 approved meteorites from Algeria (plus 31 unapproved names) (plus 4 impact craters)

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