header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 14 Jun 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 12655
Basic information Name: Northwest Africa 12655
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12655
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass:help 753 g
Classification
  history:
Recommended:  LL3-6    [explanation]

This is 1 of 28 approved meteorites classified as LL3-6.   [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 11 Jun 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12655 (NWA 12655)

(Northwest Africa)

Purchased: 2019

Classification: Ordinary chondrite (LL3-6)

History: The meteorite was purchased from a local meteorite dealer in Nouakchott, Mauritania.

Physical characteristics: Single stone completly covered by fusion crust.

Petrography: The meteorite is a chondritic breccia consisting of clastic LL3 type groundmass and chondrules with embedded up to 7 mm sized LL6 clasts. Plagioclase grain size in type 6 clasts is about 60 µm. Chondrules have a mean diameter of about 0.8 mm.

Geochemistry: type 3 lithology: olivine: Fa13.1±10.9 (Fa1.0-29.9, n =18); pyroxene: Fs12.7±7.9Wo0.8±0.4 (Fs3.9-23.9Wo0.3-1.7, n = 21); type 6 lithology: olivine: Fa29.7±0.2, n=11; pyroxene: Fs22.4±0.2Wo0.6±0.1, n=11

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Nouakchott, Mauritania
Date:P 2019
Mass (g):753.1
Pieces:1
Class:LL3-6
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):13.1; 29.7
Ferrosilite (mol%):12.7; 22.4
Wollastonite (mol%):0.8; 0.6
Classifier:A. Greshake, MNB
Type spec mass (g):25.3
Type spec location:MNB
Main mass:Fabien Kuntz
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstrasse 43, D-10115 Berlin, Germany (institutional address)
Kuntz: Fabien Kuntz, France; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 108, in preparation (2019)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6752 approved meteorites from (Northwest Africa) (plus 2052 unapproved names)

Direct link to this page