header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 4 Jul 2020
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 8459
Basic information Name: Northwest Africa 8459
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8459
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 2.65 kg
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  EL6
Recommended:  EL6    [explanation]

This is 1 of 120 approved meteorites classified as EL6.   [show all]
Search for other: EL chondrites, Enstatite chondrites, Enstatite chondrites (type 4-7), and Enstatite-rich meteorites
Comments: Approved 26 Jul 2014
Writeuphelp
Writeup from MB 103:

Northwest Africa 8459 (NWA 8459)

(Northwest Africa)

Purchased: 2013

Classification: Enstatite chondrite (EL6)

History: Purchased by Nicola Castellano at the Genova Mineral Show ,Italy.

Physical characteristics: A single piece weighing 2650 g partially covered by fusion crust.

Petrography: (V. Moggi Cecchi, G. Pratesi, S. Caporali, MSP); The thin section displays very rare relict chondrules set in a fine-grained matrix, mainly consisting of pyroxene, with minor plagioclase. Subparallel 210 μm-wide veinlets filled with iron oxides/hydroxides are present. Relict chondrules range from 0.3 to 0.9 mm in diameter and are mainly RP type, with minor GP. Opaque phases are mainly kamacite and troilite, partially weathered to iron oxides. Accessory phases are alabandite and daubreelite as blades in troilite.

Geochemistry: Orthopyroxene (Fs0.9En97.8Wo1.3), plagioclase (An15.7Or3.4); Si in kamacite = 0.7 wt.%, Ti in troilite = 5.9 wt.%

Classification: Enstatite chondrite (EL6); S1; W3. The presence of alabandite, An content of plagioclase and Si content of kamacite point to a classification as EL chondrite.

Specimens: A total of 21.3 g specimen and one thin section is on deposit at MSP. Castellano holds the main mass.

Data from:
  MB103
  Table 0
  Line 0:
Origin or pseudonym:Laayoun
Place of purchase:Genova
Date:P 2013
Mass (g):2650
Pieces:1
Class:EL6
Shock stage:S1
Weathering grade:W3
Ferrosilite (mol%):0.9
Wollastonite (mol%):1.4
Classifier:V. Moggi Cecchi, S. Caporali, G. Pratesi, MSP
Type spec mass (g):21.3
Type spec location:MSP
Main mass:Castellano
Comments:Submitted by Vanni Moggi Cecchi
Institutions
   and collections
MSP: Museo di Scienze Planetarie, Via Galcianese 20/H, 59100 Prato, Italy, Italy; Website (institutional address; updated 5 Mar 2014)
Catalogs:
References: Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7320 approved meteorites from (Northwest Africa) (plus 1973 unapproved names)

Direct link to this page