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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
Classification
  history:
Recommended:  Howardite    [explanation]

This is 1 of 432 approved meteorites classified as Howardite.   [show all]
Search for other: Achondrites, HED achondrites, and Howardites
Comments: Approved 31 Oct 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14201 (NWA 14201)

Algeria

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:
  MB110
  Table 0
  Line 0:
Date:2020
Mass (g):33
Pieces:1
Class:Howardite
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
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 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
Find references in NASA ADS:
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Geography:

Algeria
Coordinates:Unknown.

Statistics:
     This is 1 of 1250 approved meteorites from Algeria (plus 29 unapproved names) (plus 4 impact craters)

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