Meteoritical Bulletin: Entry for Northwest Africa 5675

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Northwest Africa 5675

Basic information

Name: Northwest Africa 5675
This is an OFFICIAL meteorite name.
Abbreviation: NWA 5675
Observed fall: No
Year found: 2008
Country: (Northwest Africa)
Mass: 967 g

Classification
history:

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

This is 1 of 508 approved meteorites (plus 1 unapproved name) classified as Eucrite. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 23 Jul 2016

Writeup

Writeup from MB 105:

Northwest Africa 5675 (NWA 5675)

(Northwest Africa)

Purchased: 2008

Classification: HED achondrite (Eucrite)

History: The meteorite was bought in 2008 from a local meteorite dealer in Erfoud, Morocco.

Petrography: The meteorite is a brecciated eucrite with up to 3 cm sized basaltic and gabbroic clasts, black appearing recrystallized melt clasts and mineral fragments set into a finer grained matrix. Dominant mineral phases are calcic plagioclase and exsolved pyroxene; minor phases include chromite, troilite, and silica.

Geochemistry: low-Ca pyroxene: Fs_56.3±1.5Wo_5.9±1.8(Fs_54.2-58.1Wo_3.8-8.1, n=7, FeO/MnO=29-32); Ca-pyroxene: Fs_38.2±5.5Wo_28.0±6.7(Fs_25.9-44.7Wo_20.7-42.5, n=16, FeO/MnO=29-32); calcic plagioclase: An_89.4±1.2(An_87.9-92.2, n=16)

Data from:
  MB105
  Table 0
  Line 0:

Place of purchase:	Erfoud, Morocco
Date:	P 2008
Mass (g):	967
Pieces:	1
Class:	Eucrite
Shock stage:	low
Weathering grade:	moderate
Ferrosilite (mol%):	56.3; 38.2
Wollastonite (mol%):	5.9; 28.0
Classifier:	A. Greshake, MNB
Type spec mass (g):	27.0
Type spec location:	MNB
Main mass:	Marc Jost
Comments:	Submitted by Ansgar Greshake

Institutions
and collections

MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)

Catalogs:

References:

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

Find references in NASA ADS:
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Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Dirk Hohmann
eraserhead
Michael Mulgrew
Space Jewels

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 7810 approved meteorites from (Northwest Africa) (plus 1971 unapproved names)

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