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 14279
Basic information Name: Northwest Africa 14279
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14279
Observed fall: No
Year found: 2021
Country: Algeria
Mass:help 3.4 kg
Classification
  history:
Recommended:  Winonaite    [explanation]

This is 1 of 74 approved meteorites classified as Winonaite.   [show all]
Search for other: Primitive achondrites, Winonaites
Comments: Approved 31 Oct 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14279 (NWA 14279)

Algeria

Find: 2021

Classification: Primitive achondrite (Winonaite)

History: Purchased in 2021 by Adrián Contreras Gómez, Shun-Chung Yang, and Juan Chen from Ali Mustapha in Algeria.

Physical characteristics: Sample contains visible fusion crust.

Petrography: (D. Sheikh, Cascadia) Sample displays a granoblastic texture composed of forsterite, enstatite, augite, and sodic plagioclase grains meeting at 120° triple junctions (average silicate grain size ~ 260±50 µm). Large visible grains of Fe-Ni metal (up to 3 mm) are scattered across the sample along with accessory troilite and chlorapatite.

Geochemistry: Forsterite (Fa3.5±0.3, range Fa2.8-3.8, FeO/MnO=19±4, n=11), Enstatite (Fs4.5±0.1Wo1.5±0.4, range Fs4.3-4.6Wo0.8-1.8, FeO/MnO=13±4, n=6), Augite (Fs1.4±0.2Wo44.6±0.4, range Fs1.0-1.7Wo44.1-45.3, FeO/MnO=14±3, n=7), Sodic Plagioclase (An20.6±0.6Or1.7±0.3, range An20.2-21.5Or1.3-2.1, n=6).

Classification: Primitive achondrite (Winonaite).

Specimens: 20.5 g and a thin section at NHMLAC; 176 g main mass with Adrián Contreras Gómez.

Data from:
  MB110
  Table 0
  Line 0:
Date:2021
Mass (g):3400
Pieces:many
Class:Winonaite
Shock stage:low
Weathering grade:low
Fayalite (mol%):3.5±0.3
Ferrosilite (mol%):4.5±0.1, 1.4±0.2
Wollastonite (mol%):1.5±0.4, 44.6±0.4
Classifier:D. Sheikh, Cascadia
Type spec mass (g):20.5
Type spec location:NHMLAC
Main mass:Adrián Contreras Gómez
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)
NHMLAC: Natural History Museum of Los Angeles County 900 Exposition Blvd., Los Angeles, CA 90007 , United States; Website (institutional address; updated 17 Jul 2021)
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 1208 approved meteorites from Algeria (plus 29 unapproved names) (plus 4 impact craters)

Direct link to this page