Meteoritical Bulletin: Entry for Northwest Africa 7706

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Northwest Africa 7706

Basic information

Name: Northwest Africa 7706
This is an OFFICIAL meteorite name.
Abbreviation: NWA 7706
Observed fall: No
Year found: 2012
Country: (Northwest Africa)
Mass: 279 g

Classification
history:

Meteoritical Bulletin:	MB 102	(2013)	Eucrite-pmict
Recommended:			Eucrite-pmict [explanation]

This is 1 of 409 approved meteorites classified as Eucrite-pmict. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 1 Mar 2013

Writeup

Writeup from MB 102:

Northwest Africa 7706 (NWA 7706)

(Northwest Africa)

Found: 2012

Classification: HED achondrite (Eucrite, polymict)

Petrography: The meteorite is partly covered with a shiny fusion crust and displays a light-colored interior dominated by large basaltic clast set into a fine-grained clastic matrix; few melt clasts are present. Calcic plagioclase is very abundant, pyroxene grains are typically exsolved. Accessory minerals include chromite, troilite, and SiO₂.

Geochemistry: Opx: Fs_61.9-66.2Wo_1.6-2.7, FeO/MnO=30-32; cpx: Fs_27.6-30.6Wo_41.8-43.1, FeO/MnO=29-34; calcic plagioclase: An_87.8(range An_85.8-89.7).

Data from:
  MB102
  Table 0
  Line 0:

Place of purchase:	Agadir, Morocco
Date:	2012
Mass (g):	279
Pieces:	3
Class:	Eucrite-pmict
Shock stage:	moderate
Weathering grade:	low
Ferrosilite (mol%):	61.9-66.2; 27.6-30.6
Wollastonite (mol%):	1.6-2.7; 41.8-43.1
Classifier:	A. Greshake, MNB
Type spec mass (g):	30.0
Type spec location:	MNB
Main mass:	Svend Buhl
Finder:	Aid Mohamed
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. 102, MAPS 50, 1662, September 2015

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Photos:

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

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names)

Also see:

This lists the most popular meteorites among people who looked up this meteorite.

Revision
history:

This lists important revisions made to data for this record.

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