header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 6 Aug 2022
Search for: Search type: Search limits: Display: Publication:
Names
Text help
Places
Classes
Years
Contains
Starts with
Exact
Sounds like
NonAntarctic
Falls  Non-NWAs
What's new
  in the last:
Include past classifications in search
Limit to approved meteorite names
Search text:  
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 421 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 Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
Find references in Google Scholar:
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 175 approved meteorites from Mauritania (plus 1 unapproved name) (plus 2 impact craters)

Direct link to this page