header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 18 Sep 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 8040
Basic information Name: Northwest Africa 8040
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8040
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 118 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  CK4
Recommended:  CK4    [explanation]

This is 1 of 112 approved meteorites classified as CK4.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites
Comments: Approved 18 Nov 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 8040 (NWA 8040)

(Northwest Africa)

Purchased: 2013

Classification: Carbonaceous chondrite (CK4)

History: Purchased by Eric Twelker in 2013 from a dealer in Zagora, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Separated, well-formed, medium-sized (0.8-2 mm), porphyritic magnetite-bearing chondrules in a matrix containing stained Cr-bearing magnetite.

Geochemistry: Olivine (Fa28.6-28.9, n = 3), orthopyroxene (Fs24.0-25.3Wo0.6-0.5), clinopyroxene (Fs8.3-9.7Wo47.2-45.3).

Classification: Carbonaceous chondrite (CK4).

Specimens: 26.8 g and one polished thin section are at UWB. The remainder is held by Twelker.

Data from:
  MB102
  Table 0
  Line 0:
Place of purchase:Zagora
Date:P 2013
Mass (g):118
Pieces:1
Class:CK4
Shock stage:S2
Weathering grade:low
Fayalite (mol%):28.6-28.9 (n=3)
Ferrosilite (mol%):24.0-25.3
Wollastonite (mol%):0.6-0.5
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):26.8
Type spec location:UWB
Main mass:E. Twelker
Comments:ET13-4; 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)
Twelker: Eric Twelker, P.O. Box 844, Port Townsend, WA 98368, United States; Website (private address; updated 1 Dec 2014)
Catalogs:
References: Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7885 approved meteorites from (Northwest Africa) (plus 1958 unapproved names)

Direct link to this page