Meteoritical Bulletin: Entry for Northwest Africa 6966

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Northwest Africa 6966

Basic information

Name: Northwest Africa 6966
This is an OFFICIAL meteorite name.
Abbreviation: NWA 6966
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass: 1105 g

Classification
history:

Meteoritical Bulletin:	MB 105	(2016)	Eucrite-br
Recommended:			Eucrite-br [explanation]

This is 1 of 220 approved meteorites classified as Eucrite-br. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 22 Oct 2016

Writeup

Writeup from MB 105:

Northwest Africa 6966 (NWA 6966)

(Northwest Africa)

Purchased: 2011

Classification: HED achondrite (Eucrite, brecciated)

History: The meteorite was bought in 2011 from a local meteorite dealer in Erfoud, Morocco.

Physical characteristics: The stone lacks any fusion crust and displays a greyish interior.

Petrography: The meteorite is a breccia composed of differently textured basaltic clasts up to 2 cm in size. Dominant minerals are exsolved pyroxene and calcic plagioclase up to 0.8 mm in size. Minor phases are silica, FeS, chromite and zircon. No metal was detected.

Geochemistry: low-Ca pyroxene: Fs_64.0±0.5Wo_3.5±0.6(Fs_63.1-65.0Wo_2.9-4.7, n=15, FeO/MnO=31-35); Ca-pyroxene: Fs_37.7±7.1Wo_32.7±9.2(Fs_29.1-46.9Wo_21.5-43.1, n=19, FeO/MnO=28-35); calcic plagioclase: An_81.0±3.0(An_77.6-87.7, n=20)

Data from:
  MB105
  Table 0
  Line 0:

Place of purchase:	Erfoud, Morocco
Date:	P 2011
Mass (g):	1105
Pieces:	1
Class:	Eucrite-br
Shock stage:	low
Weathering grade:	moderate
Ferrosilite (mol%):	64.0; 37.7
Wollastonite (mol%):	3.5; 32.7
Classifier:	A. Greshake, MNB
Type spec mass (g):	21.2
Type spec location:	MNB
Main mass:	Stefan Ralew
Comments:	Submitted by Ansgar Greshake

Institutions
and collections

MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Ralew: Stefan Ralew, Kunibertstraße 29, 12524 Berlin, Germany; Website (private address)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full

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Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Andreas Grünemeyer
Gerald Armstrong

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9116 approved meteorites from (Northwest Africa) (plus 1873 unapproved names)

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