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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 21 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 Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
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Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1680 approved meteorites from Morocco (plus 25 unapproved names) (plus 1 impact crater)

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