Meteoritical Bulletin: Entry for Northwest Africa 7160

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Northwest Africa 7160

Basic information

Name: Northwest Africa 7160
This is an OFFICIAL meteorite name.
Abbreviation: NWA 7160
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass: 500 g

Classification
history:

Meteoritical Bulletin:	MB 105	(2016)	H3
Recommended:			H3 [explanation]

This is 1 of 703 approved meteorites (plus 2 unapproved names) classified as H3. [show all]
Search for other: H chondrites, H chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)

Comments:

Approved 11 Mar 2016

Writeup

Writeup from MB 105:

Northwest Africa 7160 (NWA 7160)

(Northwest Africa)

Purchased: 2011

Classification: Ordinary chondrite (H3)

History: Purchased by Marcin Cimała in 2011 from a dealer in Erfoud, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS; T. Bunch, NAU) Well-formed, fairly closely-packed chondrules are set in a finer matrix.

Geochemistry: Olivine (Fa_0.5-33.2, Cr₂O₃ in ferroan olivine 0.06-0.15 wt.%, mean 0.08 wt.%, sd 0.02 wt.%, N = 8), orthopyroxene (Fs_2.8-39.7Wo_0.5-2.0, N = 3), clinopyroxene (Fs_10.2-10.3Wo_31.3-31.8, N = 2). Magnetic susceptibility log χ (× 10^-9 m³/kg)=4.97.

Classification: Ordinary chondrite (H3). H group classification based on magnetic susceptibility.

Specimens: 21.6 g including one polished thin section at PSF; main mass with Mr. M. Cimała.

Data from:
  MB105
  Table 0
  Line 0:

Place of purchase:	Erfoud
Date:	P 2011
Mass (g):	500
Pieces:	1
Class:	H3
Shock stage:	S2
Weathering grade:	W2
Magnetic suscept.:	4.97
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	21.6
Type spec location:	PSF
Main mass:	M. Cimala
Comments:	MC 084; submitted by A. Irving

Institutions
and collections

NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012)
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 Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full

Find references in NASA ADS:
Find references in Google Scholar:

Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Robert Smart
Ryan Upchurch
Woreczko Jan & Wadi

Geography:

Coordinates:

Unknown.

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

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