Meteoritical Bulletin: Entry for Northwest Africa 4197

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Northwest Africa 4197

Basic information

Name: Northwest Africa 4197
This is an OFFICIAL meteorite name.
Abbreviation: NWA 4197
Observed fall: No
Year found: 2005
Country: (Northwest Africa)
Mass: 450 g

Classification
history:

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

This is 1 of 395 approved meteorites classified as Eucrite-pmict. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 4 Jul 2013

Writeup

Writeup from MB 102:

Northwest Africa 4197 (NWA 4197)

(Northwest Africa)

Purchased: 2005 Oct 27

Classification: HED achondrite (Eucrite, polymict)

Petrography: (K. Metzler, IfP) Breccia consisting of ophitic, subophitic, and gabbroic eucrite clasts, melt rock clasts and mineral fragments set into a fine-grained, recrystallized matrix. An_87±2.

Data from:
  MB102
  Table 0
  Line 0:

Place of purchase:	Munich
Date:	P 2005 Oct 27
Mass (g):	450
Pieces:	5
Class:	Eucrite-pmict
Weathering grade:	W2-3
Ferrosilite (mol%):	50±2 (n=10)
Wollastonite (mol%):	14±2
Classifier:	A. Bischoff, IfP
Type spec mass (g):	20
Type spec location:	IfP
Main mass:	anonymous
Comments:	Submitted by A. Bischoff

Institutions
and collections

IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9092 approved meteorites from (Northwest Africa) (plus 1875 unapproved names)

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