Meteoritical Bulletin: Entry for Northwest Africa 10700

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Northwest Africa 10700

Basic information

Name: Northwest Africa 10700
This is an OFFICIAL meteorite name.
Abbreviation: NWA 10700
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass: 654 g

Classification
history:

Meteoritical Bulletin:	MB 105	(2016)	LL4-6
Recommended:			LL4-6 [explanation]

This is 1 of 78 approved meteorites classified as LL4-6. [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)

Comments:

Approved 7 Jul 2016

Writeup

Writeup from MB 105:

Northwest Africa 10700 (NWA 10700)

(Northwest Africa)

Purchased: 2015 Aug

Classification: Ordinary chondrite (LL4-6)

History: Purchased by John Higgins in August 2015 from a dealer in Laayoune, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Breccia composed of angular to rounded clasts in a relatively coarse grained matrix. Some clasts have well-formed chondrules (type 4), whereas other clasts are progressively more recrystallized with sparse to rare chondrules (types 5 and 6).

Geochemistry: Olivine (Fa_28.0-32.1, N = 3), orthopyroxene (Fs_10.9Wo_0.2; Fs_20.7-21.8Wo_2.0-0.7; N = 3), clinopyroxene (Fs_10.3-11.2Wo_43.0-42.0, N = 2).

Classification: Ordinary chondrite (LL4-6 breccia).

Specimens: 24 g including one polished thin section at UWB; remainder with Mr. J. Higgins.

Data from:
  MB105
  Table 0
  Line 0:

Place of purchase:	Laayoune
Date:	P 2015 Aug
Mass (g):	654
Pieces:	1
Class:	LL4-6
Shock stage:	S2
Weathering grade:	W1/2
Fayalite (mol%):	28.0-32.1
Ferrosilite (mol%):	10.9; 20.7-21.8
Wollastonite (mol%):	0.2; 2.0-0.7
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	24
Type spec location:	UWB
Main mass:	J. Higgins
Comments:	JH16-2; 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

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 8495 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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