Meteoritical Bulletin: Entry for Northwest Africa 10577

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Northwest Africa 10577

Basic information

Name: Northwest Africa 10577
This is an OFFICIAL meteorite name.
Abbreviation: NWA 10577
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass: 1373 g

Classification
history:

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

This is 1 of 598 approved meteorites (plus 1 unapproved name) classified as Eucrite. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 26 Mar 2016

Writeup

Writeup from MB 105:

Northwest Africa 10577 (NWA 10577)

(Northwest Africa)

Purchased: 2015

Classification: HED achondrite (Eucrite)

History: The meteorite was bought in 2015 from a local meteorite dealer in Morocco.

Petrography: The unbrecciated meteorite displays a relatively coarse-grained basaltic texture of exsolved pyroxene and lath-shaped calcic plagioclase with grain sizes of up to 1 mm. Minor phases include chromite, ilmenite and SiO₂ polymorphs.

Geochemistry: low-Ca pyroxene: Fs_60.5±0.9Wo_2.4±0.7(Fs_58.6-62.7Wo_1.9-4.6, n=15, FeO/MnO=32-37); Ca-pyroxene: Fs_26.5±0.4Wo_43.8±0.4(Fs_25.8-27.1Wo_43.4-44.7, n=15, FeO/MnO=30-33); calcic plagioclase: An_88.3±2(An_81.9-90.4, n=15)

Data from:
  MB105
  Table 0
  Line 0:

Place of purchase:	Morocco
Date:	P 2015
Mass (g):	1373
Pieces:	2
Class:	Eucrite
Shock stage:	low
Weathering grade:	low
Ferrosilite (mol%):	60.5; 26.5
Wollastonite (mol%):	2.4; 43.8
Classifier:	A. Greshake, MNB
Type spec mass (g):	31.2
Type spec location:	MNB
Main mass:	Tomek Jakubowski
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

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Geography:

Coordinates:

Unknown.

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

Also see:

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Revision
history:

This lists important revisions made to data for this record.

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