Meteoritical Bulletin: Entry for Northwest Africa 11668

MetSoc Home Publications Contacts

Search the Meteoritical Bulletin Database
Last update: 24 Apr 2024
Search for:	Search type:	Search limits:	Display:	Publication:
Names Text Places Classes Years	Contains Starts with Exact Sounds like	NonAntarctic Falls Non-NWAs Has strewnfield		What's new in the last:
Include past classifications in search		Has photo	Limit to approved meteorite names
Search text:

Northwest Africa 11668

Basic information

Name: Northwest Africa 11668
This is an OFFICIAL meteorite name.
Abbreviation: NWA 11668
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass: 20 g

Classification
history:

Meteoritical Bulletin:	MB 107	(2018)	Martian (shergottite)
Recommended:			Martian (shergottite) [explanation]

This is 1 of 322 approved meteorites (plus 2 unapproved names) classified as Martian (shergottite). [show all]
Search for other: Martian meteorites

Comments:

Approved 27 Mar 2018

Writeup

Writeup from MB 107:

Northwest Africa 11668 (NWA 11668)

(Northwest Africa)

Purchased: 2018

Classification: Martian meteorite (Shergottite)

History: The meteorite was purchased in Tindouf, Algeria, from a Sahrawi dealer.

Physical characteristics: Four dark-green pieces partly covered with fusion crust.

Petrography: The meteorite is a medium grained basalt predominantly composed of up to 1.5 mm sized pyroxene and plagioclase grains. Pyroxene is intensely fractured pigeonite and augite displaying mottled compositional zoning. Plagioclase is completely transformed into compositionally homogeneous maskelynite. Minor phases are ilmenite, ulvöspinel, pyrrhotite and some Si-rich mesostasis.

Geochemistry: pigeonite: Fs_53.7±4.4Wo_14.3±2.4(Fs_35.5-59.6Wo_9.7-20.0, n=38, FeO/MnO=33-43); augite: Fs_26.2±7.0Wo_32.2±3.9(Fs_21.1-48.9Wo_20.6-37.8, n=32, FeO/MnO=27-40); feldspar: An_56.8Ab_42.0Or_1.2, n=15

Classification: Martian (basaltic shergottite)

Data from:
  MB107
  Table 0
  Line 0:

Place of purchase:	Tindouf, Algeria
Date:	P 2018
Mass (g):	20
Pieces:	4
Class:	Martian (shergottite)
Shock stage:	strong
Weathering grade:	low
Ferrosilite (mol%):	53.7; 26.2
Wollastonite (mol%):	14.3; 32.2
Classifier:	A. Greshake, MNB
Type spec mass (g):	4.2
Type spec location:	MNB
Main mass:	Salamu Hamad
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. 107, MAPS 55, 460-462

Find references in NASA ADS:
Find references in Google Scholar:

Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Christophe PICQ
Public domain photographs:
Ansgar Greshake

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.

Direct link to this page