Meteoritical Bulletin: Entry for Northwest Africa 6566

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Northwest Africa 6566

Basic information

Name: Northwest Africa 6566
This is an OFFICIAL meteorite name.
Abbreviation: NWA 6566
Observed fall: No
Year found: 2010
Country: Morocco
Mass: 145 g

Classification
history:

Meteoritical Bulletin:	MB 100	(2012)	Eucrite
Recommended:			Eucrite-pmict [explanation]

This is 1 of 425 approved meteorites classified as Eucrite-pmict. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 26 Sep 2011

Writeup

Writeup from MB 100:

Northwest Africa 6566 (NWA 6566)

Morocco

Found: 2010

Classification: HED achondrite (Eucrite)

Physical characteristics: Some remnant fusion crust, light tan exterior and interior color.

Petrography: Shock-melt generated, fine-grained granular to subophitic basalt matrix with basaltic xenoliths and rare diogenite and glassy shock melt clasts arranged in flow orientation. Post crystallization shock, S2-4; weathering grade is low. Component modes (vol %): matrix, 69: xenoliths, 18; shock melt, 8; diogenite, 5.

Geochemistry: Matrix: orthopyroxene Fs_64.5Wo_4.1, Al₂O₃ = 3.2 wt % (FeO/MnO = 28); augite, Fs_29.8Wo_42.6, Al₂O₃ = 4.5 wt %; plagioclase, An_89.Diogenite clasts: orthopyroxene, Fs_31.1Wo_1.5(FeO/MnO = 27); olivine Fa_43.1(FeO/MnO = 64); chromite cr# = 79.

Classification: Achondrite (polymict eucrite)

Specimens: 20 g on deposit at NAU*; main mass held by Aaronson.

Data from:
  MB100
  Table 1
  Line 1420:

Place of purchase:	Erfoud
Date:	2010
Mass (g):	145
Pieces:	1
Class:	Eucrite
Shock stage:	S2-4
Weathering grade:	low
Classifier:	T. Bunch, NAU
Type spec mass (g):	20
Type spec location:	NAU*
Main mass:	Aaronson
Comments:	Submitted by Bunch

Data from:
  MB113
  Table 0
  Line 0:

Classifier:	T. Bunch, NAU
Type spec location:	NAU* type specimen now at UWB. 20 g including one polished thin section at UWB.
Comments:	Work names 1434 and M1088

Institutions
and collections

NAU*: Collection discontinued. Specimens redistributed as shown in individual meteorite records, United States (institutional address; updated 24 Jun 2024)
UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
Aaronson: Sahara Overland Ltd., Harhora, Temara, 12000, Morocco (private address; updated 3 Jan 2010)
NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States (institutional address; updated 12 Apr 2012)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 100, MAPS 49, E1-E101 (2014)
Published in Meteoritical Bulletin, no. 113, in preparation (2024)

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Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
bphd

Geography:

Morocco

Coordinates:

Unknown.

Statistics:
This is 1 of 2163 approved meteorites from Morocco (plus 32 unapproved names) (plus 1 impact crater)

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