header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 6 Oct 2021
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 13420
Basic information Name: Northwest Africa 13420
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13420
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass:help 3.91 kg
Classification
  history:
Recommended:  L6    [explanation]

This is 1 of 11580 approved meteorites (plus 10 unapproved names) classified as L6.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 5 Sep 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13420 (NWA 13420)

(Northwest Africa)

Purchased: 2019 Oct

Classification: Ordinary chondrite (L6)

History: Purchased by Grant Harkness in October 2019 from a dealer in Zagora, Morocco.

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Largely recrystallized with rare remnant chondrules. Accessory phases are stained metal, troilite, chromite and apatite.

Geochemistry: Olivine (Fa24.5±0.2, range Fa24.1-24.7, N = 4), low-Ca pyroxene (Fs21.0±0.4Wo1.5±0.2, range Fs20.5-21.6Wo1.1-1.7, N = 6).

Classification: Ordinary chondrite (L6).

Specimens: 23.57 g including one polished thin section at PSF; remainder in the Harkness Collection.

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Zagora
Date:P 2019 Oct
Mass (g):3908
Pieces:1
Class:L6
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):24.5±0.2
Ferrosilite (mol%):21.0±0.4
Wollastonite (mol%):1.5±0.2
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):23.57
Type spec location:PSF
Main mass:Harkness Collection
Comments:Work name HC-14; submitted by A. Irving
Institutions
   and collections
PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
BrownU: Brown University Providence, RI 02912, United States (institutional address; updated 7 Sep 2019)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7912 approved meteorites from (Northwest Africa) (plus 1974 unapproved names)

Direct link to this page