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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 409 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 Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Algeria
Coordinates:Unknown.

Statistics:
     This is 1 of 1166 approved meteorites from Algeria (plus 29 unapproved names) (plus 4 impact craters)

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