header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 16 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 4995
Basic information Name: Northwest Africa 4995
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 4995
Observed fall: No
Year found: 2005
Country: (Northwest Africa)
Mass:help 190 g
Classification
  history:
Meteoritical Bulletin:  MB 105  (2016)  H3
Recommended:  H3    [explanation]

This is 1 of 594 approved meteorites (plus 2 unapproved names) classified as H3.   [show all]
Search for other: H chondrites, H chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 11 Mar 2016
Writeuphelp
Writeup from MB 105:

Northwest Africa 4995 (NWA 4995)

(Northwest Africa)

Purchased: 2005

Classification: Ordinary chondrite (H3)

History: The meteorite was found by an anonymous finder in northwest Africa and bought by the main mass holder in Morocco.

Physical characteristics: One dark brown fragment of 190 g lacking any fusion crust was found.

Petrography: The meteorite is an unbrecciated chondrite with abundant clearly defined chondrules (about 0.3 mm in diamter) of various textural types. Olivine and pyroxene in chondrules and matrix are unequilibrated; FeNi metal is mostly oxidized.

Data from:
  MB105
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2005
Mass (g):190
Pieces:1
Class:H3
Shock stage:S2
Weathering grade:W3
Fayalite (mol%):15.0±8.6 (0.9-32.4, n=29)
Ferrosilite (mol%):10.7±7.2 (2.2-34.1, n=43)
Wollastonite (mol%):0.8±0.6 (0.1-2.7, n=23)
Classifier:A. Greshake, MNB
Type spec mass (g):22.3
Type spec location:MNB
Main mass:Harald Stehlik
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstrasse 43, D-10115 Berlin, Germany (institutional address)
Stehlik: Harald Stehlik, 1220 Wien, Austria (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7009 approved meteorites from (Northwest Africa) (plus 2002 unapproved names)

Direct link to this page