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Northwest Africa 14214
Basic information Name: Northwest Africa 14214
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14214
Observed fall: No
Year found: 2021
Country: Mauritania
Mass:help 420 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 14214 (NWA 14214)

Mauritania

Find: 2021

Classification: HED achondrite (Howardite)

History: Purchased in March 2021 by Matthew Stream from a meteorite dealer in Mauritania.

Physical characteristics: Sample contains minor fusion crust.

Petrography: (D. Sheikh, Cascadia) This sample is a polymict breccia composed primarily of sub-angular to sub-rounded clasts (up to 4 mm): tabular/blocky diogenite clasts dominated by coarse-grained orthopyroxene (~31 vol. %); fine-grained eucrite clasts containing low-Ca pyroxene, pigeonite (some exsolved), augite, and calcic plagioclase (~17 vol. %); coarse-grained cumulate eucrite clasts containing low-Ca pyroxene, pigeonite (some exsolved), augite (some exsolved), calcic plagioclase, and minor olivine (~52 vol. %). Accessory phases (<1 vol. %) include ilmenite, Fe-oxides, and SiO2-rich glass.

Geochemistry: Diogenite clasts: Orthopyroxene (Fs30.2±0.8Wo4.3±0.3, range Fs28.9-31.5Wo4.0-5.2, n=5). Eucrite clasts: Low-Ca Pyroxene (Fs44.9±9.7Wo5.0±1.5, range Fs33.9-58.7Wo1.2-5.9, Fe/Mn=30±4, n=10), Pigeonite (Fs51.3±9.6Wo13.6±6.7, range Fs33.5-68.6Wo6.1-24.7, Fe/Mn=30±4, n=37), Augite (Fs46.1±15.2Wo32.4±5.1, range Fs27.1-68.3Wo26.1-40.0, Fe/Mn=34±6, n=9), Calcic Plagioclase (An86.4±5.6, range An76.8-96.7, n=37), Olivine (Fa77.6±1.2, range Fa76.2-79.1, Fe/Mn=43±5, n=5).

Classification: HED Achondrite (Howardite).

Specimens: 20.5 g and a thin section at Cascadia; main mass with Matthew Stream.

Data from:
  MB110
  Table 0
  Line 0:
Date:2021
Mass (g):420
Pieces:1
Class:Howardite
Shock stage:moderate
Weathering grade:low
Fayalite (mol%):77.6±1.2
Ferrosilite (mol%):41.4±10.4, 51.3±9.6, 46.1±15.2
Wollastonite (mol%):4.9±1.3, 13.6±6.7, 32.4±5.1
Classifier:D. Sheikh, Cascadia
Type spec mass (g):20.5
Type spec location:Cascadia
Main mass:Matthew Stream
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
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Eric Escrich      
Robert Smart   
Ryan Upchurch   
Geography:

Mauritania
Coordinates:Unknown.

Statistics:
     This is 1 of 187 approved meteorites from Mauritania (plus 2 unapproved names) (plus 2 impact craters)

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