header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 16 Jan 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 12794
Basic information Name: Northwest Africa 12794
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12794
Observed fall: No
Year found: 2004
Country: (Northwest Africa)
Mass:help 7 g
Classification
  history:
Recommended:  L5-melt breccia    [explanation]

This is 1 of 31 approved meteorites classified as L5-melt breccia.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 5 Apr 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 12794 (NWA 12794)

Sahara

Purchased: 2004

Classification: Ordinary chondrite (L5, melt breccia)

History: A single stone weighing 7 g was bought from a dealer from Morocco

Petrography: The rock mainly consists of fine-grained material embedding a large clast of L5 chondrite. The fine-grained portion has a melt texture with olivine and pyroxene embedded in a feldspathic matrix. The melt portion also contains metal-sulfide assemblages as typical for other melt rocks.

Geochemistry: Random analyses of the rock revealed mean olivine and pyproxene composition of Fa24.0±1.9 (n=15) and Fs18.4±1.7 (n=18), respectively.

Classification: Ordinary chondrite (L5-melt breccia)

Specimens: IfP: 2.1 g and 1 thin section

Data from:
  MB109
  Table 0
  Line 0:
Origin or pseudonym:Desert
Place of purchase:Osnabrück, Germany
Date:P 2004
Mass (g):7.0
Pieces:1
Class:L5-melt breccia
Weathering grade:W1
Fayalite (mol%):24.0±1.9 (n=15)
Ferrosilite (mol%):18.4±1.7 (n=18)
Wollastonite (mol%):3.2±1.4 (n=18)
Classifier:K.Klemm, Addi Bischoff, IfP
Type spec mass (g):2.1
Type spec location:IfP
Main mass:Sigrid Wengert
Finder:anonymous
Comments:Working name SW-6.4g; submitted by Klemm K.
Institutions
   and collections		 IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8890 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

Direct link to this page