Meteoritical Bulletin: Entry for Northwest Africa 11001

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Northwest Africa 11001

Basic information

Name: Northwest Africa 11001
This is an OFFICIAL meteorite name.
Abbreviation: NWA 11001
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass: 5.1 kg

Classification
history:

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

This is 1 of 131 approved meteorites classified as Eucrite-unbr. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 17 Dec 2016

Writeup

Writeup from MB 105:

Northwest Africa 11001 (NWA 11001)

(Northwest Africa)

Purchased: 2016 May

Classification: HED achondrite (Eucrite, unbrecciated)

History: Brahim Tahiri sent the stones to his partner Sean Tutorow in May 2016 for analysis.

Physical characteristics: The repository specimen has a brown fusion crust.

Petrography: Modal composition: ~50 vol% pyroxene with exsolution lamellae (~500 μm in size) and 50 vol% plagioclase (200-500um). Accessory opaques (oxides and metal). The metal has minor oxide rims.

Geochemistry: Pyroxenes: pigeonite Fs_56.2±6.3Wo_6.6±7.3(n=10), augite Fs_30.0±2.3Wo_39.6±2.6(n=10), Fe/Mn = 28 ± 1 (n=20). Plagioclase: An_90.0±0.2(n=15).

Classification: Eucrite, unbrecciated.

Specimens: 103.9 g at UWO, including a polished mount and thin section. Remaining mass with Sean Tutorow.

Data from:
  MB105
  Table 0
  Line 0:

Place of purchase:	Morocco
Date:	P 2016 May
Mass (g):	5100
Pieces:	5
Class:	Eucrite-unbr
Shock stage:	low
Weathering grade:	low
Ferrosilite (mol%):	56.2±6.4 (n=10); 30.0±2.3 (n=10)
Wollastonite (mol%):	6.6±7.3 (n=10); 39.6±2.6 (n=10)
Classifier:	Zhiguo Guo
Type spec mass (g):	103.9
Type spec location:	UWO
Main mass:	S. Tutorow
Comments:	Field name is G680.; submitted by A. Bouvier

Institutions
and collections

UWO: University of Western Ontario, Department of Earth Sciences, BGS 1026, 1151 Richmond St. N, London, Ontario, Canada N6A 5B7, Canada (institutional address; updated 18 Jul 2015)

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)
Mike Markowitz

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names)

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