Meteoritical Bulletin: Entry for Northwest Africa 10505

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Northwest Africa 10505

Basic information

Name: Northwest Africa 10505
This is an OFFICIAL meteorite name.
Abbreviation: NWA 10505
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass: 850 g

Classification
history:

Meteoritical Bulletin:	MB 105	(2016)	Diogenite
Recommended:			Diogenite [explanation]

This is 1 of 510 approved meteorites classified as Diogenite. [show all]
Search for other: Achondrites, Diogenites, and HED achondrites

Comments:

Approved 3 Feb 2016

Writeup

Writeup from MB 105:

Northwest Africa 10505 (NWA 10505)

(Northwest Africa)

Purchased: 2015 Sep

Classification: HED achondrite (Diogenite)

History: Purchased by Marcin Cimała in September 2015 from a dealer in Ouarzazate, Morocco.

Petrography: (A. Irving, UWS) Protogranular aggregate of predominantly orthopyroxene with ~5 vol.% olivine, accessory chromite, kamacite and troilite, plus rare calcic plagioclase. Cataclastic textures are absent. Secondary calcite occurs in small patches and along grain boundaries.

Geochemistry: (P. Carpenter, WUSL) Orthopyroxene (Fs_24.7-24.8Wo_3.7-3.8, FeO/MnO = 29-30, N = 3), olivine (Fa_29.7-29.9, FeO/MnO = 48-50, N = 2).

Classification: Diogenite (protogranular, olivine-bearing).

Specimens: 26 g including one polished thin section and one polished thick section at PSF; remainder with Mr. M. Cimała.

Data from:
  MB105
  Table 0
  Line 0:

Place of purchase:	Ouarzazate
Date:	P 2015 Sep
Mass (g):	850
Pieces:	1
Class:	Diogenite
Shock stage:	low
Weathering grade:	moderate
Fayalite (mol%):	29.7-29.9
Ferrosilite (mol%):	24.7-24.8
Wollastonite (mol%):	3.7-3.8
Classifier:	A. Irving and P. Carpenter, UWS
Type spec mass (g):	26
Type spec location:	PSF
Main mass:	M. Cimala
Comments:	MC 135; submitted by A. Irving

Institutions
and collections

PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)

Catalogs:

References:

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

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Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Marcin Cimala
Robert Smart

Geography:

Coordinates:

Unknown.

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

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