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Northwest Africa 8469
Basic information Name: Northwest Africa 8469
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8469
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 137 g
Meteoritical Bulletin:  MB 103  (2014)  EL6
Recommended:  EL6    [explanation]

This is 1 of 130 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 8 Aug 2014
Writeup from MB 103:

Northwest Africa 8469 (NWA 8469)

(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 137 g with a small portion of fusion crust.

Petrography: (V. Moggi Cecchi, G. Pratesi, S. Caporali, MSP); The thin section displays rare relic chondrules set in a fine-grained matrix, mainly consisting of pyroxene, with minor plagioclase. Relic chondrules (mainly RP type, with minor PP) range from 0.2 to 0.4 mm in diameter. Opaque phases are mainly kamacite and troilite, partially weathered to iron oxides. Accessory phases are alabandite and daubreelite as blades in troilite. The presence of alabandite, An content of plagioclase and Si content of kamacite point to a classification as EL chondrite.

Geochemistry: Orthopyroxene (Fs0.5En98.2Wo1.3), plagioclase (An14.6Or3.8); Si in kamacite = 1.0 wt.%, Ti in troilite = 5.8 wt.%

Classification: Enstatite chondrite (EL6); S1; W3

Specimens: A total of 25.3 g specimen and one thin section is on deposit at MSP. Castellano holds the main mass.

Data from:
  Table 0
  Line 0:
Origin or pseudonym:Laayoun
Place of purchase:Genova
Date:P 2013
Mass (g):137
Shock stage:S1
Weathering grade:W3
Ferrosilite (mol%):0.5
Wollastonite (mol%):1.3
Classifier:V. Moggi Cecchi, S. Caporali, G. Pratesi, MSP
Type spec mass (g):25.3
Type spec location:MSP
Main mass:Castellano
Comments:Submitted by Vanni Moggi Cecchi
   and collections
MSP: Museo di Scienze Planetarie, Via Galcianese 20/H, 59100 Prato, Italy, Italy; Website (institutional address; updated 22 Oct 2022)
References: Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
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     This is 1 of 9116 approved meteorites from (Northwest Africa) (plus 1873 unapproved names)

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