header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 19 Mar 2023
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 2705
Basic information Name: Northwest Africa 2705
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 2705
Observed fall: No
Year found: 2005
Country: Morocco
Mass:help 30 g
Classification
  history:
Meteoritical Bulletin:  MB 90  (2006)  Ureilite
Recommended:  Ureilite    [explanation]

This is 1 of 623 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 3 Feb 2006
Writeuphelp
Writeup from MB 90:

Northwest Africa 2705

Morocco

Find: 2004

Achondrite (ureilite)

History: A complete 70 g stone was purchased in Erfoud, Morocco.

Petrography: (J. Wittke and T. Bunch, NAU) Specimen shows well-formed, basal deformation lamellae in olivine with small enclaves of slightly rotated domains. The olivines and pyroxenes contain a large amount of fine-grained graphite inclusions. Olivine margins show limited reduction. Modal analyses of silicates (vol%): Olivine = 95, pigeonite = 3, orthopyroxene = 2.

Composition: Olivine (cores, Fa22.3; FeO/MnO = 40–47), pigeonite (small grains, Fs7.8Wo7.7; FeO/MnO = 8), orthopyroxene (Fs3.5Wo2.7).

Classification: Achondrite (ureilite); moderate shock, minimal weathering.

Specimens: A 16.8 g type specimen is on deposit at NAU. GHupé holds the main mass.

Data from:
  MB90
  Table 2
  Line 49:
Place of purchase:Unknown
Date:2005
Mass (g):30
Pieces:1
Class:Ure
Fayalite (mol%):22.3
Type spec mass (g):16.8
Institutions
   and collections		 NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012)
GHupé: Gregory M. Hupé, 9003 Placid Lakes Blvd., Lake Placid, FL 33852, United States; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 90, MAPS 41, 1383-1418 (2006)
Find references in NASA ADS:
Find references in Google Scholar:
Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Meteorites Australia      
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1967 approved meteorites from Morocco (plus 37 unapproved names) (plus 1 impact crater)

Direct link to this page