header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 20 Jun 2022
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:
Include past classifications in search
Limit to approved meteorite names
Search text:  
Northwest Africa 7995
Basic information Name: Northwest Africa 7995
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7995
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass:help 351 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  H7
Recommended:  H7    [explanation]

This is 1 of 29 approved meteorites classified as H7.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 14 Oct 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 7995 (NWA 7995)

(Northwest Africa)

Purchased: 2011

Classification: Ordinary chondrite (H7)

History: Purchased by Terry Boswell in 2011 from a dealer in Midelt, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Completely recrystallized with no chondrules. Olivine, orthopyroxene, clinopyroxene, sodic plagioclase, chromite, altered kamacite and troilite. Thin veinlets of goethite crosscut the specimen.

Geochemistry: Olivine (Fa19.2-19.3), orthopyroxene (Fs16.7-16.9Wo4.0-4.4), clinopyroxene (Fs6.9-9.1Wo44.3-39.4)

Classification: Ordinary chondrite (H7).

Specimens: 22 g and one polished thin section are at UWB. The remainder is held by Mr. T. Boswell.

Data from:
  MB102
  Table 0
  Line 0:
Place of purchase:Midelt
Date:P 2011
Mass (g):351
Pieces:1
Class:H7
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):19.2-19.3
Ferrosilite (mol%):16.7-16.9
Wollastonite (mol%):4.0-4.4
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):22
Type spec location:UWB
Main mass:T. Boswell
Comments:TB13-8; 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)
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 8495 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

Direct link to this page