NWA 11451 Achondrite Eucrite Part Slice weighing 0.78g

Name: NWA 11451 Achondrite Eucrite Part Slice weighing 0.78g
SKU: 26208
Price: 15.00 GBP
Availability: InStock

£15.00

In stock

Northwest Africa 11451

Basic information

Name: Northwest Africa 11451
This is an OFFICIAL meteorite name.
Abbreviation: NWA 11451
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass: 106 g

Classification
history:

Meteoritical Bulletin:	MB 106	(2018)	Eucrite-pmict
Recommended:			Eucrite-pmict [explanation]

This is 1 of 350 approved meteorites classified as Eucrite-pmict. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 13 Oct 2017

Writeup

Writeup from MB 106:

Northwest Africa 11451 (NWA 11451)

(Northwest Africa)

Purchased: 2017 Apr

Classification: HED achondrite (Eucrite, polymict)

History: Purchased by Fabien Kuntz in April 2017 from a dealer in Erfoud, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Breccia consisting of shocked and altered eucrite clasts (with differing textures) plus related debris in a finer grained matrix. Pyroxene (exsolved pigeonite) is pale orange in thin section and calcic plagioclase is polycrystalline; accessory minerals include fayalite, ilmenite, troilite, Ni-free metal and barite.

Geochemistry: Orthopyroxene host (Fs_67.9Wo_2.0, FeO/MnO = 29), clinopyroxene exsolution lamella (Fs_31.1Wo_42.9, FeO/MnO = 33), orthopyroxene host (Fs_58.7Wo_3.5, FeO/MnO = 33), clinopyroxene exsolution lamella (Fs_26.5Wo_43.2, FeO/MnO = 33), fayalite (Fa_81.2-81.8, FeO/MnO = 43), plagioclase (An₉₀,7-90.9Or_0.5-0.2, N = 2).

Classification: Eucrite (polymict breccia, shocked).

Specimens: 22.37 g including one polished thin section at PSF; remainder with Kuntz.

Data from:
MB106
Table 0
Line 0:

Place of purchase:	Erfoud
Date:	P 2017 Apr
Mass (g):	106
Pieces:	1
Class:	Eucrite-pmict
Shock stage:	high
Weathering grade:	moderate
Fayalite (mol%):	81.2-81.8
Ferrosilite (mol%):	67.9; 31.1; 58.7; 26.5
Wollastonite (mol%):	2.0; 42.9; 3.5; 43.2
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	22.37
Type spec location:	PSF
Main mass:	F. Kuntz
Comments:	Work name K345; submitted by A. Irving