header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 30 Nov 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 12648
Basic information Name: Northwest Africa 12648
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12648
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass:help 536 g
Classification
  history:
Recommended:  H4    [explanation]

This is 1 of 5782 approved meteorites (plus 2 unapproved names) classified as H4.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 17 Jun 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12648 (NWA 12648)

(Northwest Africa)

Purchased: 2019 Feb

Classification: Ordinary chondrite (H4)

History: Purchased in February 2019 by Darryl Pitt from a Mauritanian dealer.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Well-formed, relatively small chondrules are set in a relatively coarse grained matrix containing stained metal.

Geochemistry: Olivine (Fa17.9±0.1 (range Fa17.8-17.9), N = 3), low-Ca pyroxene (Fs15.6±0.1Wo0.9±0.1 (range Fs15.5-15.7Wo0.8-0.9), N = 3).

Classification: Ordinary chondrite (H4).

Specimens: 21.2 g including one polished thin section at UWB; remainder with DPitt.

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Mauritania
Date:P 2019 Feb
Mass (g):535.5
Pieces:1
Class:H4
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):17.9±0.1
Ferrosilite (mol%):15.6±0.1
Wollastonite (mol%):0.9±0.1
Classifier:A. Irving & P. Carpenter
Type spec mass (g):21.2
Type spec location:UWB
Main mass:D. Pitt
Comments:Work name MVCH 462; 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)
DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 108, in preparation (2019)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7035 approved meteorites from (Northwest Africa) (plus 2000 unapproved names)

Direct link to this page