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Northwest Africa 6564
Basic information Name: Northwest Africa 6564
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 6564
Observed fall: No
Year found: 2010
Country: Morocco
Mass:help 188 g
Classification
  history:
Meteoritical Bulletin:  MB 100  (2012)  Eucrite-pmict
Recommended:  Eucrite-pmict    [explanation]

This is 1 of 342 approved meteorites classified as Eucrite-pmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 3 Oct 2011
Writeuphelp
Writeup from MB 100:

Northwest Africa 6564 (NWA 6564)

Morocco

Found: 2010

Classification: HED achondrite (Eucrite, polymict)

History: A. Aaronson purchased a 188 g stone in Erfoud in 2010

Physical characteristics: Desert ablated with some remnant fusion crust.

Petrography: Shock-melt generated, fine-grained granular to subophitic basalt matrix with basaltic xenoliths and rare diogenite and glassy shock melt clasts of variable shock levels.

Geochemistry: Matrix: orthopyroxene Fs64.5Wo4.1, Al2O3 = 3.2 wt % (FeO/MnO = 28); augite, Fs29.8Wo42.6, Al2O3 = 4.5 wt %; plagioclase, An89. Diogenite clasts: orthopyroxene, Fs31.1Wo1.5 (FeO/MnO = 27); olivine Fa43.1 (FeO/MnO = 64); chromite cr# = 79.

Classification: Achondrite (eucrite pmict)

Specimens: 20.6 g on deposit at NAU; main mass held by GHupé

Data from:
  MB100
  Table 1
  Line 1419:
Place of purchase:Erfoud
Date:2010
Mass (g):188
Pieces:1
Class:Eucrite-pmict
Shock stage:S2-4
Weathering grade:low
Fayalite (mol%):43.1
Ferrosilite (mol%):65.1; 31.1
Wollastonite (mol%):4.1; 1.5
Classifier:T. Bunch and Wittke, NAU
Type spec mass (g):20.6
Type spec location:NAU
Main mass:GHupé
Comments:Submitted by Bunch
Institutions
   and collections
NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012)
Aaronson: Sahara Overland Ltd., Harhora, Temara, 12000, Morocco (private address; updated 3 Jan 2010)
GHupé: Gregory M. Hupé, 9003 Placid Lakes Blvd., Lake Placid, FL 33852, United States; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 100, MAPS 49, E1-E101 (2014)
Find references in NASA ADS:
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Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1417 approved meteorites from Morocco (plus 15 unapproved names) (plus 1 impact crater)

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