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Northwest Africa 13660
Basic information Name: Northwest Africa 13660
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13660
Observed fall: No
Year found: 2019
Country: Algeria
Mass:help 110 g
Classification
  history:
Recommended:  L6    [explanation]

This is 1 of 12192 approved meteorites (plus 7 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 10 Jan 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 13660 (NWA 13660)

Algeria

Find: 2019

Classification: Ordinary chondrite (L6)

History: Purchased in 2020 by Matthew Stream from a seller in Algeria.

Physical characteristics: Single stone with dark-brown fusion crust.

Petrography: (D. Sheikh, FSU) Specimen is a chondrite containing secondary recrystallized feldspar (~50 µm), kamacite, and troilite. Only a few chondrules are observed (~800 µm, n=3).

Geochemistry: Olivine (Fa25.5±0.5, range Fa24.4-26.9, n=27), Low-Ca Pyroxene (Fs21.4±0.5Wo1.6±0.2, range Fs20.9-22.6Wo1.2-1.9, n=11).

Classification: Ordinary Chondrite (L6)

Specimens: 21.3 g at UCLA; main mass with Matthew Stream.

Data from:
  MB110
  Table 0
  Line 0:
Date:2019
Mass (g):110
Pieces:1
Class:L6
Shock stage:S3
Weathering grade:W2
Fayalite (mol%):25.5±0.5
Ferrosilite (mol%):21.4±0.5
Wollastonite (mol%):1.6±0.2
Classifier:D. Sheikh, FSU
Type spec mass (g):21.3
Type spec location:UCLA
Main mass:Matthew Stream
Comments:Submitted by Daniel Sheikh
Institutions
   and collections
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011)
FSU: Department of Geological Sciences, Florida State University, Tallahassee FL 32306-4100, United States (institutional address; updated 16 Dec 2010)
Catalogs:
References: Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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Geography:

Algeria
Coordinates:Unknown.

Statistics:
     This is 1 of 1236 approved meteorites from Algeria (plus 29 unapproved names) (plus 4 impact craters)

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