Meteoritical Bulletin: Entry for Northwest Africa 12350

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Northwest Africa 12350

Basic information

Name: Northwest Africa 12350
This is an OFFICIAL meteorite name.
Abbreviation: NWA 12350
Observed fall: No
Year found: 2006
Country: Morocco
Mass: 6.63 kg

Classification
history:

Meteoritical Bulletin:	MB 107	(2018)	H4
Recommended:			H4 [explanation]

This is 1 of 6493 approved meteorites (plus 2 unapproved names) classified as H4. [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)

Comments:

Approved 27 Nov 2018

Writeup

help

Writeup from MB 107:

Northwest Africa 12350 (NWA 12350)

Morocco

Purchased: 2006

Classification: Ordinary chondrite (H4)

History: Purchased in 2006 by Sean Tutorow in Quartzsite, Arizona.

Physical characteristics: Typing specimen has a fusion crust and displays minor weathering.

Petrography: (M. Spencer, UWO) Olivine has irregular fractures. One large barred olivine crystal (>1 mm) is present in the thin section. Plagioclase displays twinning and undulatory extinction (S2). Pyroxene displays pleochroism in plain polarized light, undulatory extinction. Metal Abundance: Fe-Ni metals (mostly taenite, some kamacite present), Fe-Ni oxides, Fe-sulfides are still present (W1). Most chondrules display sharp boundaries, with an average diameter of 0.27 mm (n=13).

Geochemistry: (EMPA, M. Beauchamp, UWO) Olivine: Fa_19.1±0.5; Fe/Mn=36.8±1.5 (n=10), Pyroxene: Fs_16.2±0.1Wo_1.0±0.3; Fe/Mn=21.8±1.1 (n=10), Plagioclase: An_10.7±3.3(n=10).

Classification: Ordinary Chondrite (H4), Weathering W1, Shock S2

Specimens: 206 g including a thin section at UWO. Main mass with S. Tutorow.

Data from:
  MB107
  Table 0
  Line 0:

Place of purchase:	Quartzite, Arizona, USA
Date:	P 2006
Mass (g):	6629.8
Pieces:	1
Class:	H4
Shock stage:	S2
Weathering grade:	W1
Fayalite (mol%):	19.1±0.5 (N=10)
Ferrosilite (mol%):	16.2±0.1 (N=10)
Wollastonite (mol%):	1.0±0.3 (N=10)
Classifier:	M. Spencer, UWO
Type spec mass (g):	206
Type spec location:	UWO
Main mass:	S. Tutorow
Comments:	G709; submitted by A. Bouvier, UWO

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. 107, MAPS 55, 460-462

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Geography:

Morocco

Morocco

Coordinates:

Unknown.

Statistics:
This is 1 of 2082 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater)

Also see:

This lists the most popular meteorites among people who looked up this meteorite.

Revision
history:

This lists important revisions made to data for this record.

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