NWA 12963 - Achondrite, Eucrite, Cumulate (1/49) - Shiny Crust, Flowlines

Description

NWA 12963
NWA 12963
Found Sahara, 2019
Achondrite, Vestan
Eucrite, Cumulate
Specimen is a 32.44g crusted fragment
Northwest Africa 12963
Basic information
Name:
Northwest Africa 12963
This is an OFFICIAL meteorite name.
Abbreviation:
NWA 12963
Observed fall:
No
Year found:
2019
Country:
(Northwest Africa)
Mass:
185 g
Classification
history:
Recommended:
Eucrite-cm
[explanation]
This is 1 of 45 approved meteorites classified as Eucrite-cm.
Comments:
Approved 29 Nov 2019
Writeup
Writeup from MB 108:
Northwest Africa 12963
(NWA 12963)
(Northwest Africa)
Purchased: 2019 May
Classification: HED achondrite (Eucrite, cumulate)
Petrography
: (J. Gattaccecan,
CEREGE
) Brecciated igneous rock. Main minerals are mm-sized pyroxene and plagioclase. Other minerals include Fe,Ni metal, troilite, chromite (to 100 µm).
Geochemistry
: Low-Ca pyroxene Fs
33.3±0.4
Wo
3.4±0.5
, FeO/MnO=30.5 (n=3). Plagioclase An
93
Ab
6.7
Or
0.2
(n=2). Chromite Cr# 0.81.
Classification
: achondrite, eucrite
Specimens
: Type specimen and a polished section at
CEREGE
. Main mass with
Kuntz
.
Data from:
MB108
Table 0
Line 0:
Place of purchase:
Zagora, Morocco
Date:
P 2019 May
Mass (g):
185
Pieces:
1
Class:
Eucrite-cm
Ferrosilite (mol%):
33.3±0.4 (n=3)
Wollastonite (mol%):
3.4±0.5
Classifier:
J. Gattacceca, CEREGE
Type spec mass (g):
20.3
Type spec location:
CEREGE
Main mass:
Kuntz
Comments:
work name K431; submitted by Jérôme Gattacceca
Institutions
and collections
CEREGE
: CEREGE BP 80 Avenue Philibert, Technopole de l'Arbois 13545 Aix-en-Provence Cedex 4 France, France (institutional address; updated 29 Oct 2018)
Kuntz
: Fabien Kuntz, France;
Website
(private address)
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