header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 18 Jun 2019
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 7316
Basic information Name: Northwest Africa 7316
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7316
Observed fall: No
Year found: 2012
Country: (Northwest Africa)
Mass:help 153 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  H5
Recommended:  H5    [explanation]

This is 1 of 9575 approved meteorites (plus 11 unapproved names) classified as H5.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 22 Oct 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 7316 (NWA 7316)

(Northwest Africa)

Purchased: 2012 Apr

Classification: Ordinary chondrite (H5)

History: Purchased by Kuntz in April 2012 from a dealer in Erfoud, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Largely recrystallized, but with sparse, medium-sized (to 0.7 mm) chondrules and partial chondrules. There is a moderate content of fairly fresh metal grains, but also some thin cross-cutting, orange iron hydroxide veinlets.

Geochemistry: Olivine (Fa21.5-21.8) with FeO/MnO=43, orthopyroxene (Fs17.8-18.8Wo0.4-1.3) with FeO/MnO=23-27, clinopyroxene (Fs15.6Wo13.2).

Classification: Ordinary chondrite (H5). May be transitional H/L5 based on the olivine and pyroxene compositions, including their FeO/MnO ratios, being intermediate between those established for equilibrated H and L chondrites.

Data from:
  MB102
  Table 0
  Line 0:
Place of purchase:Erfoud
Date:P 2012 Apr
Mass (g):153
Pieces:1
Class:H5
Shock stage:S2
Weathering grade:W1/2
Fayalite (mol%):21.5-21.8 (n=5)
Ferrosilite (mol%):17.8-18.8
Wollastonite (mol%):0.4-1.3
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):23.3
Type spec location:UWB
Main mass:F. Kuntz
Comments:K187; 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)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Kuntz: Fabien Kuntz, France; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
Find references in NASA ADS:
Find references in Google Scholar:
Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Michael S. Scherman   
The Wilcox Collection of Meteorites   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6759 approved meteorites from (Northwest Africa) (plus 2047 unapproved names)

Direct link to this page