Meteoritical Bulletin: Entry for Northwest Africa 10638

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Northwest Africa 10638

Basic information

Name: Northwest Africa 10638
This is an OFFICIAL meteorite name.
Abbreviation: NWA 10638
Observed fall: No
Year found: 2016
Country: Morocco
Mass: 307 g

Classification
history:

Meteoritical Bulletin:	MB 105	(2016)	L6
Recommended:			L6 [explanation]

This is 1 of 12780 approved meteorites (plus 11 unapproved names) classified as L6. [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)

Comments:

Approved 21 Apr 2016

Writeup

Writeup from MB 105:

Northwest Africa 10638 (NWA 10638)

Morocco

Purchased: Feb 2016

Classification: Ordinary chondrite (L6)

History: Purchased from Moroccan meteorite dealer in 2016.

Physical characteristics: Physical Characteristics: Single stone; rough, brown, dark exterior. Saw cut reveals a few small chondrules set in a dark-gray matrix.

Petrography: (K. Domanik and F. Stephan, UAz) Microprobe examination of a polished mount shows a few remaining indistinct equilibrated chondrules and ubiquitous patches of plagioclase 50-300 μm in size. Metal mostly oxidized with numerous oxidized veinlets throughout the meteorite.

Geochemistry: Mineral compositions and geochemistry: (K. Domanik and F. Stephan, UAz) Olivine Fa_24.8±0.3, Fe/Mn=48.0±3.1, n=15; low-Ca pyroxene Fs_21.1±0.2Wo_1.5±0.3, Fe/Mn=27.9±2.5 n=11.

Classification: Oridinary Chonrite (L6)

Specimens: 29.4 g including probe mount on deposit at UAz, Reed holds the main mass.

Data from:
  MB105
  Table 0
  Line 0:

Place of purchase:	Tucson, AZ
Date:	P Feb 2016
Mass (g):	306.6
Pieces:	1
Class:	L6
Fayalite (mol%):	24.8±0.3
Ferrosilite (mol%):	21.1±0.2
Wollastonite (mol%):	Wo1.5±0.3
Classifier:	F. Stephan and K. Domanik, UAz
Type spec mass (g):	29.4
Type spec location:	UAz
Main mass:	Blaine Reed
Comments:	Submitted by K. Domanik

Institutions
and collections

UAz: Lunar and Planetary Laboratory, University of Arizona, 1629 E. University Blvd., Tucson, AZ 85721, United States (institutional address; updated 14 Jan 2012)
Reed: Blaine Reed, P.O. Box 1141, Delta, CO 81416, United States; Website (private address)

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:

Morocco

Coordinates:

Unknown.

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

Also see:

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Revision
history:

This lists important revisions made to data for this record.

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