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Northwest Africa 6586
Basic information Name: Northwest Africa 6586
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 6586
Observed fall: No
Year found: 2009
Country: (Northwest Africa)
Mass:help 1019 g
Meteoritical Bulletin:  MB 104  (2015)  Pallasite, PMG
Recommended:  Pallasite, PMG    [explanation]

This is 1 of 56 approved meteorites (plus 1 unapproved name) classified as Pallasite, PMG.   [show all]
Search for other: Main group pallasites, Metal-rich meteorites, and Pallasites
Comments: Note: originally released as NWA 10398 on 17 Nov 2015
Approved 22 Nov 2015
Writeup from MB 104:

Northwest Africa 6586 (NWA 6586)

(Northwest Africa)

Purchased: 2009

Classification: Pallasite (Main group)

History: Many stones weighing 1019 g were found in Morocco in 2009. Thomas Webb acquired the sample from a meteorite prospector in Erfoud, 2009.

Physical characteristics: The weathered stones are brown and angular in shape. The stones lack any fusion crust. The cut face of the interior is gray with yellowish-green olivine crystals.

Petrography: Description and classification (A. Love, App): Sample is composed of weathered metals enclosing rounded olivine crystals. Olivine crystals are crosscut by FeOH minerals. Sample contains weathered troilite and accessory schreibersite.

Geochemistry: (A. Love, App): Olivine Fa13.4±0.2, N=8

Classification: Based on texture and chemistry, this is a Pallasite (PMG).

Specimens: Several individuals weighing 25.34 g, and a polished mount are currently on deposit at App.

Data from:
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2009
Mass (g):1019
Class:Pallasite, PMG
Shock stage:low
Weathering grade:W4
Fayalite (mol%):13.4±0.2 (N=8)
Classifier:A. Love, App
Type spec mass (g):25.34
Type spec location:App
Main mass:TWebb
Comments:Submitted by Anthony Love
   and collections
App: Department of Geology, 572 Rivers St., Appalachian State University, Boone, NC 28608, United States (institutional address; updated 7 Mar 2013)
TWebb: No contact information provided., United States (private address)
References: Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
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     This is 1 of 9305 approved meteorites from (Northwest Africa) (plus 1873 unapproved names)
Synonymshelp: Northwest Africa 10398 (NWA 10398 assigned in error. Fixed 22 Nov 2015)
NWA 10398 (NWA 10398 assigned in error. Fixed 22 Nov 2015)

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