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Northwest Africa 14207
Basic information Name: Northwest Africa 14207
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14207
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass:help 520 g
Classification
  history:
Recommended:  L4    [explanation]

This is 1 of 2000 approved meteorites (plus 4 unapproved names) classified as L4.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 18 Sep 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14207 (NWA 14207)

(Northwest Africa)

Purchased: 2019

Classification: Ordinary chondrite (L4)

History: Purchased by Geologist Juan Avilés Poblador in 2019 from a meteorite dealer in Mauritania.

Physical characteristics: Single stone with minor fusion crust.

Petrography: (D. Sheikh, Cascadia) This sample is an ordinary chondrite containing chondrules (Av. 650±100 μm) and accessory Fe-Ni metal and troilite.

Geochemistry: Olivine (Fa25.7±1.4, range Fa23.9-28.8, n=25), Low-Ca Pyroxene (Fs21.0±0.7Wo1.5±0.2, range Fs19.9-22.4Wo1.2-2.0, n=14).

Classification: Ordinary chondrite (L4).

Specimens: 40 g and a thin section at Cascadia; main mass with Juan Avilés Poblador.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Mauritania
Date:P 2019
Mass (g):520
Pieces:1
Class:L4
Shock stage:S2
Weathering grade:W3
Fayalite (mol%):25.7±1.4
Ferrosilite (mol%):21.0±0.7
Wollastonite (mol%):1.5±0.2
Classifier:D. Sheikh, Cascadia
Type spec mass (g):40
Type spec location:Cascadia
Main mass:Juan Aviles Poblador
Comments:Submitted by Daniel Sheikh
Institutions
   and collections
Cascadia: Cascadia Meteorite Laboratory, Portland State University, Department of Geology, Room 17 Cramer Hall, 1721 SW Broadway, Portland, OR 97201, United States; Website (institutional address; updated 28 Oct 2011)
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: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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