header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 20 Jun 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 14425
Basic information Name: Northwest Africa 14425
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14425
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 3.67 kg
Classification
  history:
Recommended:  EH3    [explanation]

This is 1 of 139 approved meteorites classified as EH3.   [show all]
Search for other: EH chondrites, Enstatite chondrites, Enstatite chondrites (type 3), and Enstatite-rich meteorites
Comments: Approved 12 Feb 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 14425 (NWA 14425)

(Northwest Africa)

Purchased: 2021 Feb

Classification: Enstatite chondrite (EH3)

History: Purchased by Jason Whitcomb in February 2021 from an Algerian dealer.

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Mostly relatively small enstatite-forsterite-bearing chondrules (exhibiting a wide size variation, apparent diameter 380±410 µm, N = 24) are set in a fine grained matrix containing daubreelite, troilite, altered Si-bearing kamacite, perryite, schreibersite, oldhamite and albitic glass. Several chondrules contain relatively ferroan low-Ca pyroxene.

Geochemistry: Enstatite (Fs1.3±0.9Wo0.4±0.3, range Fs0.3-4.1Wo0.0-1.0, N = 19), forsterite (Fa0.3±0.1, range Fa0.3-0.4, N = 3), relatively ferroan low-Ca pyroxene (Fs13.4±3.8Wo3.0±1.1, range Fs11.4-19.1Wo4.2-1.9, N = 4).

Classification: Enstatite chondrite (EH3). The presence of relatively ferroan low-Ca pyroxene in addition to the dominant enstatite has been previously documented in EH3 chondrite Yamato 691.

Specimens: 24.83 g including one polished thin section at PSF; remainder with Mr. J. Whitcomb.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2021 Feb
Mass (g):3665
Pieces:1
Class:EH3
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):0.3±0.1
Ferrosilite (mol%):1.3±0.9; 11.4-19.1
Wollastonite (mol%):0.4±0.3; 4.2-1.9
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):24.83
Type spec location:PSF
Main mass:J. Whitcomb
Comments:Work name JW-21; submitted by A. Irving
Institutions
   and collections
PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
BrownU: Brown University Providence, RI 02912, United States (institutional address; updated 7 Sep 2019)
Catalogs:
References: Published in Meteoritical Bulletin, no. 111, in preparation (2022)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8495 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

Direct link to this page