Meteoritical Bulletin: Entry for Northwest Africa 13166

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Northwest Africa 13166

Basic information

Name: Northwest Africa 13166
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13166
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass: 400 g

Classification
history:

Meteoritical Bulletin:	MB 109	(2020)	Eucrite-melt breccia
Recommended:			Eucrite-melt breccia [explanation]

This is 1 of 104 approved meteorites classified as Eucrite-melt breccia. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 9 Feb 2020

Writeup

help

Writeup from MB 109:

Northwest Africa 13166 (NWA 13166)

(Northwest Africa)

Purchased: 2019

Classification: HED achondrite (Eucrite, melt breccia)

History: The meteorite was purchased from a meteorite dealer in Morocco.

Physical characteristics: Dark-grayish rock with some fusion crust.

Petrography: The meteorite is a eucrite-melt breccia composed of up to 1.5 cm sized basaltic clasts set into black melt rock matrix. Basaltic clasts consist of exsolved pyroxenes and often lath shaped calcic plagioclase up to 1.5 mm in size. The fine-grained melt rock is mostly recrystallized and mineral grains in contact with the melt are partly resorbed; some regions show flow textures. Minor phases include silica, chromite, ilmenite, FeS, and barite. No metallic iron has been detected.

Geochemistry: low-Ca pyroxene: Fs_59.2±0.5Wo_2.2±0.1(Fs_58.4-59.8Wo_2.0-2.4, FeO/MnO=25-28, n=14); Ca-pyroxene: Fs_25.7±0.9Wo_43.8±0.8(Fs_24.4-27.7Wo_41.9-43.8, FeO/MnO=25-34, n=13); calcic plagioclase: An_90.3±1.1(An_88.9-92.1, n=13)

Data from:
  MB109
  Table 0
  Line 0:

Place of purchase:	Morocco
Date:	P 2019
Mass (g):	400
Pieces:	1
Class:	Eucrite-melt breccia
Shock stage:	moderate
Weathering grade:	low
Ferrosilite (mol%):	59.2; 25.7
Wollastonite (mol%):	2.2; 43.8
Classifier:	A. Greshake, MNB
Type spec mass (g):	20.8
Type spec location:	MNB
Main mass:	Marcin Cimala
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. 109, in preparation (2020)

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Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Marcin Cimala
Woreczko Jan & Wadi
Public domain photographs:
Ansgar Greshake

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 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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