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Northwest Africa 8460
Basic information Name: Northwest Africa 8460
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8460
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 155 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  EL6
Recommended:  EL6    [explanation]

This is 1 of 129 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 8460 (NWA 8460)

(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 155 g with no 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. Many iron oxides/hydroxides veinlets (170 μm-wide) are present. Subparallel 210 μm-wide veinlets filled with iron oxides/hydroxides are present. Relict chondrules range from 0.2 to 1.0 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 (Fs0.8En97.8Wo1.4), plagioclase (An14.8Or3.0); Si in kamacite = 0.9 wt.%, Ti in troilite = 6.1 wt.%

Classification: Enstatite chondrite (EL6); S2; 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 20.5 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):155
Pieces:1
Class:EL6
Shock stage:S2
Weathering grade:W3
Ferrosilite (mol%):0.8
Wollastonite (mol%):1.3
Classifier:V. Moggi Cecchi, S. Caporali, G. Pratesi, MSP
Type spec mass (g):20.9
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 22 Oct 2022)
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:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9092 approved meteorites from (Northwest Africa) (plus 1875 unapproved names)

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