Meteoritical Bulletin: Entry for Northwest Africa 10145

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Northwest Africa 10145

Basic information

Name: Northwest Africa 10145
This is an OFFICIAL meteorite name.
Abbreviation: NWA 10145
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass: 191 g

Classification
history:

Meteoritical Bulletin:	MB 104	(2015)	Lodranite
Recommended:			Lodranite [explanation]

This is 1 of 93 approved meteorites classified as Lodranite. [show all]
Search for other: Acapulcoite-lodranite family, Lodranites, and Primitive achondrites

Comments:

Approved 11 Jun 2015

Writeup

Writeup from MB 104:

Northwest Africa 10145 (NWA 10145)

(Northwest Africa)

Purchased: 2015 Jan

Classification: Primitive achondrite (Lodranite)

History: Purchased by Darryl Pitt in January 2015 from a dealer in Erfoud, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Matrix-poor breccia composed mainly of coarse mineral grains (up to 7 mm) of olivine, orthopyroxene, clinopyroxene, chromite, kamacite (altered to iron hydroxides) and troilite. Olivine contains numerous tiny inclusions composed of chromite+clinopyroxene.

Geochemistry: Olivine (Fa_10.5-10.6, FeO/MnO = 25, N = 3), orthopyroxene (Fs_8.8-9.0Wo_4.1-1.9, FeO/MnO = 13-14, N = 2), clinopyroxene (Fs_3.6-3.7Wo_44.7-42.7, FeO/MnO = 9-11, N = 2).

Classification: Lodranite. Paired with NWA 10150.

Specimens: 23.8 g including one polished thin section at UWB. The remainder is held by DPitt.

Data from:
  MB104
  Table 0
  Line 0:

Place of purchase:	Erfoud
Date:	P 2015 Jan
Mass (g):	191
Pieces:	1
Class:	Lodranite
Shock stage:	low
Weathering grade:	moderate
Fayalite (mol%):	10.5-10.6
Ferrosilite (mol%):	8.8-8.9; 3.6-3.7
Wollastonite (mol%):	4.1-1.9; 44.7-42.7
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	23.8
Type spec location:	UWB
Main mass:	DPitt
Comments:	MAC 91; 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, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; Website (private address)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

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Revision
history:

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