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Northwest Africa 14276
Basic information Name: Northwest Africa 14276
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14276
Observed fall: No
Year found: 2020
Country: Morocco
Mass:help 250 g
Classification
  history:
Recommended:  L3-5    [explanation]

This is 1 of 23 approved meteorites (plus 1 unapproved name) classified as L3-5.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 6 Oct 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14276 (NWA 14276)

Morocco

Find: 2020

Classification: Ordinary chondrite (L3-5)

History: Purchased in 2020 by Alex Folta from Mohamed el Guirah in Morocco.

Physical characteristics: Sample displays dark-brown fusion crust. Clasts and chondrules are present within the sample.

Petrography: (D. Sheikh, Cascadia) Sample is an ordinary chondrite genomict breccia composed of sub-angular equilibrated clasts (up to 1 cm) and an unequilibrated lithology (type 3) containing chondrules (Av. ~760±50 µm) set within a slightly opaque to fine-grained matrix. Accessory phases include troilite, Fe-Ni metal, iron oxides, and secondary recrystallized plagioclase (35±10 µm, some converted to maskelynite).

Geochemistry: Type 3 lithology: Olivine (range Fa18.9-44.4, n=6), Low-Ca Pyroxene (range Fs15.8-22.9 Wo1.0-1.9, n=3); Type 5 clasts: Olivine (Fa24.0±0.7, range Fa23.3-25.6, n=16), Low-Ca Pyroxene (Fs20.3±0.4 Wo1.3±0.2, range Fs19.4-20.8 Wo1.0-1.7, n=15).

Classification: Ordinary chondrite (L3-5).

Specimens: 25.3 grams and a thin section at Cascadia; 89g main mass with David Martin.

Data from:
  MB110
  Table 0
  Line 0:
Date:2020
Mass (g):250
Pieces:many
Class:L3-5
Shock stage:S5
Weathering grade:W2
Fayalite (mol%):24.0±0.7
Ferrosilite (mol%):20.3±0.4
Wollastonite (mol%):1.3±0.2
Classifier:D. Sheikh, Cascadia
Type spec mass (g):25.3
Type spec location:Cascadia
Main mass:David Martin
Comments:V1; 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
Find references in NASA ADS:
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Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1904 approved meteorites from Morocco (plus 27 unapproved names) (plus 1 impact crater)

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