header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 2 Aug 2020
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 13348
Basic information Name: Northwest Africa 13348
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13348
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 69 g
Classification
  history:
Recommended:  CH3    [explanation]

This is 1 of 27 approved meteorites classified as CH3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CH chondrites, CH-CB family, and Metal-rich meteorites
Comments: Approved 7 Jul 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13348 (NWA 13348)

(Northwest Africa)

Purchased: 2020 Apr

Classification: Carbonaceous chondrite (CH3)

History: Purchased by Mark Lyon in April 2020 from a Moroccan dealer.

Physical characteristics: A single small (69 g), dark and fairly dense stone. A polished interior surface exhibits abundant fine grained metal.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Very small chondrules, chondrule fragments and silicate mineral clasts (apparent diameter 45±19 µm, N = 25) accompanied by relatively abundant grains of metal (~25 vol.%) are set within an even finer grained matrix. Metal is predominantly kamacite with inclusions of taenite and Cr-troilite.

Geochemistry: Olivine (Fa17.5±15.5, range Fa2.0-41.1, N = 7), low-Ca pyroxene (Fs9.4±9.7Wo2.9±2.0, range Fs1.8-25.1Wo0.0-4.6, N = 6), pigeonite (Fs1.9Wo7.9), subcalcic augite (Fs2.4Wo29.1), augite (Fs10.0Wo43.1), aluminous diopside (Fs0.5Wo58.7, Al2O3 = 15.9 wt.%), plagioclase (An86.4Or0.1), kamacite (Ni 4.9 wt.%), Si-bearing kamacite (Ni 6.6 wt.%, Cr 0.7 wt.5, Si 6.0 wt.%). Magnetic susceptibility log χ (× 10-9 m3/kg) = 5.34.

Classification: Carbonaceous chondrite (CH3).

Specimens: 14.1 g including one polished endcut at UWB; remainder with Mr. M. Lyon.

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2020 Apr
Mass (g):69
Pieces:1
Class:CH3
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):17.5±15.5
Ferrosilite (mol%):9.4±9.7
Wollastonite (mol%):2.9±2.0
Magnetic suscept.:5.34
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):14.1
Type spec location:UWB
Main mass:M. Lyon
Comments:Work name ZLI27; submitted by A. Irving
Institutions
   and collections
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
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 7354 approved meteorites from (Northwest Africa) (plus 1958 unapproved names)

Direct link to this page