Meteoritical Bulletin: Entry for Northwest Africa 10647

MetSoc Home Publications Contacts

Search the Meteoritical Bulletin Database
Last update: 19 Mar 2023
Search for:	Search type:	Search limits:	Display:	Publication:
Names Text Places Classes Years	Contains Starts with Exact Sounds like	NonAntarctic Falls Non-NWAs Has strewnfield		What's new in the last:
Include past classifications in search		Has photo	Limit to approved meteorite names
Search text:

Northwest Africa 10647

Basic information

Name: Northwest Africa 10647
This is an OFFICIAL meteorite name.
Abbreviation: NWA 10647
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass: 345 g

Classification
history:

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

This is 1 of 127 approved meteorites classified as Eucrite-unbr. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 24 May 2016

Writeup

Writeup from MB 105:

Northwest Africa 10647 (NWA 10647)

(Northwest Africa)

Purchased: 2015 Dec

Classification: HED achondrite (Eucrite, unbrecciated)

History: Purchased by John Curchin in December 2015 from a Moroccan dealer.

Petrography: (A. Irving and S. Kuehner, UWS) Subophitic texture. Composed predominantly of prismatic, simply-twinned grains of exsolved pigeonite (up to 4 mm long) and laths of calcic plagioclase with accessory silica polymorph, ilmenite, stained Ni-free metal, troilite and rare zircon. Microfaults are present in places.

Geochemistry: Low-Ca pyroxene host (Fs_56.8-61.5Wo_6.1-2.9, FeO/MnO = 29-30, N = 3), clinopyroxene exsolution lamellae (Fs_26.0-26.3Wo_43.6-43.5, FeO/MnO = 28, N = 2), plagioclase (An_88.8-91.6Or_0.3-0.2, N = 2).

Classification: Eucrite (unbrecciated).

Specimens: 23.57 g including one polished thin section at UWB; remainder with Mr. J. Curchin.

Data from:
  MB105
  Table 0
  Line 0:

Place of purchase:	Morocco
Date:	P 2015 Dec
Mass (g):	345
Pieces:	1
Class:	Eucrite-unbr
Shock stage:	low
Weathering grade:	low
Ferrosilite (mol%):	56.8-61.5; 26.0-26.3
Wollastonite (mol%):	6.1-2.9; 43.6-43.5
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	23.57
Type spec location:	UWB
Main mass:	J. Curchin
Comments:	JC16-1; submitted by A. Irving

Institutions
and collections

UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full

Find references in NASA ADS:
Find references in Google Scholar:

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9013 approved meteorites from (Northwest Africa) (plus 1869 unapproved names)

Direct link to this page