Meteoritical Bulletin: Entry for Northwest Africa 10970

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Northwest Africa 10970

Basic information

Name: Northwest Africa 10970
This is an OFFICIAL meteorite name.
Abbreviation: NWA 10970
Observed fall: No
Year found: 2005
Country: (Northwest Africa)
Mass: 8.64 kg

Classification
history:

Meteoritical Bulletin:	MB 106	(2018)	H3/4
Recommended:			H3/4 [explanation]

This is 1 of 36 approved meteorites classified as H3/4. [show all]
Search for other: H chondrites, H chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)

Comments:

Approved 3 Mar 2017

Writeup

Writeup from MB 106:

Northwest Africa 10970 (NWA 10970)

(Northwest Africa)

Purchased: 2005

Classification: Ordinary chondrite (H3/4)

History: Purchased by an anonymous collector from a dealer at the Munich Show in 2005 and subsequently acquired by the Hollis Collection.

Petrography: (A. Irving and S. Kuehner, UWS) Unequilibrated with highly magnesian cores in olivine and orthopyroxene. Well-formed, relatively small chondrules (apparent diameter 300±200 μm) are set in a recrystallized matrix containing abundant stained metal.

Geochemistry: Olivine (predominantly Fa_16.5-17.1, magnesian core Fa_1.2, Cr₂O₃ <0.04 wt.%, N = 7), orthopyroxene (Fs_4.2-42.2Wo_0.3-2.6, N = 3), clinopyroxene (Fs_1.1-1.2Wo_39.4-44.3, N = 2). Magnetic susceptibility log χ (× 10^-9 m³/kg) = 4.98.

Classification: Ordinary chondrite (H3/4).

Specimens: 36 g including one polished thin section at PSF; remainder in the Hollis Collection.

Data from:
  MB106
  Table 0
  Line 0:

Place of purchase:	Munich
Date:	P 2005
Mass (g):	8637
Pieces:	1
Class:	H3/4
Shock stage:	S2
Weathering grade:	W1
Fayalite (mol%):	1.2-17.1
Ferrosilite (mol%):	4.2-42.2
Wollastonite (mol%):	0.3-2.6
Magnetic suscept.:	4.98
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	36
Type spec location:	PSF
Main mass:	Hollis Collection
Comments:	CHC16016; 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)

Catalogs:

References:

Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.

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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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