header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 15 Jan 2022
Search for: Search type: Search limits: Display: Publication:
Names
Text help
Places
Classes
Years
Contains
Starts with
Exact
Sounds like
NonAntarctic
Falls  Non-NWAs
What's new
  in the last:
Limit to approved meteorite names
Search text:  
Northwest Africa 14278
Basic information Name: Northwest Africa 14278
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14278
Observed fall: No
Year found: 2020
Country: Morocco
Mass:help 4.4 kg
Classification
  history:
Recommended:  L5-melt breccia    [explanation]

This is 1 of 27 approved meteorites classified as L5-melt breccia.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 31 Oct 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14278 (NWA 14278)

Morocco

Find: 2020

Classification: Ordinary chondrite (L5, melt breccia)

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

Physical characteristics: Sample displays dark-brown fusion crust. Silicate clasts appear to have been darkened by shock.

Petrography: (D. Sheikh, Cascadia) Sample is a impact melt breccia composed of sub-angular to sub-rounded clasts (up to 2 cm) containing few chondrules (up to 2 mm, n=3), secondary recrystallized feldspar (~ 40 µm, some converted to maskelynite), Fe-Ni metal, and troilite set within a shock melted matrix composed predominantly of impact melt. One Barred Olivine chondrule (~2 mm) found within a clast has been sheared in half along a visible microfault.

Geochemistry: Olivine (Fa24.5±0.4, range Fa23.7-25.1, n=10), Low-Ca Pyroxene (Fs21.2±0.7Wo1.6±0.2, range Fs20.4-22.4Wo1.2-1.7, n=11).

Classification: Ordinary chondrite (L5-melt breccia).

Specimens: 36.1 g and a thin section at Cascadia; 371.3 g main mass with Ralf Simmat.

Data from:
  MB110
  Table 0
  Line 0:
Date:2020
Mass (g):4400
Pieces:many
Class:L5-melt breccia
Shock stage:S5
Weathering grade:W2
Fayalite (mol%):24.5±0.4
Ferrosilite (mol%):21.2±0.7
Wollastonite (mol%):1.6±0.2
Classifier:D. Sheikh, Cascadia
Type spec mass (g):36.1
Type spec location:Cascadia
Main mass:Ralf Simmat
Comments:V3; 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:
Find references in Google Scholar:
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1741 approved meteorites from Morocco (plus 26 unapproved names) (plus 1 impact crater)

Direct link to this page