Meteoritical Bulletin: Entry for Northwest Africa 15834

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Northwest Africa 15834

Basic information

Name: Northwest Africa 15834
This is an OFFICIAL meteorite name.
Abbreviation: NWA 15834
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass: 96.1 g

Classification
history:

Recommended:

Eucrite [explanation]

This is 1 of 576 approved meteorites (plus 1 unapproved name) classified as Eucrite. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 7 May 2023

Writeup

Writeup from MB 112:

Northwest Africa 15834 (NWA 15834)

(Northwest Africa)

Purchased: 2013

Classification: HED achondrite (Eucrite)

Physical characteristics: Two fragments weighing 76.3 and 19.8 g. Light interior and nearly intact and glassy fresh fusion crust showing flight orientation. Both fragments make up a single rock.

Petrography: Unbrecciated with subophitic texture. Minerals are exsolved pigeonite, calcic plagioclase, silica polymorphs, ilmenite, chromite, troilite and minor kamacite.

Geochemistry: low-Ca pyroxene Fs_62.9±1.9Wo_2.9±1.9, FeO/MnO=33.9±3.2 (n=29). Plagioclase An_89.6±5.0Ab_10.1±4.7Or_0.3±0.3(n=16), range An_78.7-96.3.Ca pyroxene Fs_29.3±0.9Wo_39.1±6.4.

Classification: Achondrite (eucrite, unbrecciated)

Data from:
  MB112
  Table 0
  Line 0:

Place of purchase:	Munich, Germany
Date:	P 2013
Mass (g):	96.1
Pieces:	2
Class:	Eucrite
Shock stage:	S2
Weathering grade:	W1
Ferrosilite (mol%):	62.9±1.9 (n=29); 29.3±0.9 (n=6)
Wollastonite (mol%):	2.9±1.9 (n=292); 39.1±6.4 (n=6)
Classifier:	K.Klemm, M. Patzek
Type spec mass (g):	19.8
Type spec location:	IfP
Main mass:	M. Jost
Finder:	anonymous
Comments:	working number SJS 2203; submitted by Klemm K.

Institutions
and collections

IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)
SJS: Space Jewels Switzerland, 2555 Brügg, Switzerland (private address; updated 3 Jan 2010)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 112, in preparation (2023)

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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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