header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 14 Jan 2020
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 7747
Basic information Name: Northwest Africa 7747
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7747
Observed fall: No
Year found: 2012
Country: (Northwest Africa)
Mass:help 70 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  Eucrite-pmict
Recommended:  Eucrite-pmict    [explanation]

This is 1 of 344 approved meteorites classified as Eucrite-pmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 12 Apr 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 7747 (NWA 7747)

(Northwest Africa)

Purchased: 2012

Classification: HED achondrite (Eucrite, polymict)

Petrography: The grayish meteorite consists of basaltic and rare dark melt clasts set into a fine-grained clastic matrix of dominantly calcic plagioclase and exsolved pyroxene. Accessories include chromite, troilite and SiO2 polymorphs.

Geochemistry: Ca-poor pyroxene: Fs54.4-62.6Wo3.1-15; FeO/MnO=30-33; augite: Fs28.4-42.6Wo25.6-43.1; FeO/MnO=31.35; calcic plagioclase: An83.4-93.5

Data from:
  MB102
  Table 0
  Line 0:
Place of purchase:Sainte-Marie-aux-Mines, France
Date:P 2012
Mass (g):70
Pieces:1
Class:Eucrite-pmict
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):54.4-62.6; 28.4-42.6
Wollastonite (mol%):3.1-15; 25.6-43.1
Classifier:A. Greshake, MNB
Type spec mass (g):16.6
Type spec location:MNB
Main mass:Harald Stehlik
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum f├╝r Naturkunde, Invalidenstra├če 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Stehlik: Harald Stehlik, 1220 Wien, Austria (private address)
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 7098 approved meteorites from (Northwest Africa) (plus 2005 unapproved names)

Direct link to this page