header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 18 Aug 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 2634
Basic information Name: Northwest Africa 2634
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 2634
Observed fall: No
Year found: 2004
Country: (Northwest Africa)
Mass:help 600 g
Classification
  history:
Meteoritical Bulletin:  MB 89  (2005)  Ureilite
MetBase:  v. 7.1  (2006)  Ureilite
Recommended:  Ureilite    [explanation]

This is 1 of 510 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Writeuphelp
Writeup from MB online:

Northwest Africa 2634

Northwest Africa

Purchased 2004

Achondrite (ureilite)

A 600.2 g complete stone with fusion crust was purchased in Erfoud, Morocco. Description and classification (T. Bunch and J. Wittke, NAU): mosaicized-type ureilite; elongated olivine and pigeonite in preferred orientation; highly shocked with pyroxenes completely converted to mosaic texture, olivine less so; reduction level is R3. Olivine cores, Fa21.4, rims reduced to Fa3.8; pigeonite, Fs18.8Wo9.9; sub-calcic augite, Fs17 Wo16.6; vein metal, 0.3-3.7 wt. % Ni. Low weathering grade. Specimens: type specimen, 46 g, NAU; main mass, MFarmer.

Data from:
  MB89
  Table 7
  Line 347:
Place of purchase:Erfoud
Date:2004
Mass (g):600.2
Pieces:1
Class:Ure
Shock stage:high
Fayalite (mol%):3.8-21.4
Classifier:Ted Bunch, NAU
Type spec mass (g):46
Type spec location:NAU
Comments:Pig: Fs18.8Wo9.9
Institutions
   and collections
NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012)
MFarmer: Michael Farmer, P.O. Box 86059, Tucson, AZ 85754-6059, United States; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 89, MAPS 40, A201-A263 (2005)
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)
ale bartolommei-giulio M.   
Argus Rocks   
Edward Krikorian   
Franco Vignato   
Gerald Armstrong   
Michael S. Scherman   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6877 approved meteorites from (Northwest Africa) (plus 2037 unapproved names)

Direct link to this page