Meteoritical Bulletin: Entry for Northwest Africa 14276

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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: 250 g

Classification
history:

Meteoritical Bulletin:	MB 110	(2022)	L3-5
Recommended:			L3-5 [explanation]

This is 1 of 24 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

Writeup

help

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 Fa_18.9-44.4, n=6), Low-Ca Pyroxene (range Fs_15.8-22.9Wo_1.0-1.9, n=3); Type 5 clasts: Olivine (Fa_24.0±0.7, range Fa_23.3-25.6, n=16), Low-Ca Pyroxene (Fs_20.3±0.4Wo_1.3±0.2, range Fs_19.4-20.8Wo_1.0-1.7, 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

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Geography:

Morocco

Morocco

Coordinates:

Unknown.

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

Also see:

This lists the most popular meteorites among people who looked up this meteorite.

Revision
history:

This lists important revisions made to data for this record.

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