Dar el Kahal ( 22,000 g )

Vorderseite Hochglanz poliert.
Frontside highly polished.
 
Dar el Kahal        22°5’50"N, 2°32’35"W
Gao, Mali
Purchased: Oct 2013
Classification: Ordinary chondrite (H5-6)
History: A first individual, completely covered by black fusion crust, was found by a nomad while searching for historical artifacts near the former salt mines of Taoudenni, northern Mali. During the following systematic search many fragments totaling 85 kg were recovered from a strewn field about 10 km in diameter.
Petrography: The meteorite is an H type breccia consisting of completely recrystallized type 6 and less intensely recrystallized type 5 fragments. The latter contain delineated chondrules. The meteorite is strongly shocked (S4), i.e., olivine shows mosaicism.
 
State/Prov/County:
Gao
Place of purchase:
Munich, Germany
Date:
P Oct 2013
Latitude:
22°5'50"N
Longitude:
2°32'35"W
Mass (g):
85000
Pieces:
many
Class:
H5-6
Shock stage:
S4
Weathering grade:
W1
Fayalite (mol%):
17.4
Ferrosilite (mol%):
16
Wollastonite (mol%):
0.9
Classifier:
A. Greshake, MNB
Type spec mass (g):
29.8
Type spec location:
MNB
Main mass:
Hanno Strufe and Ismaily Sidi Mohamed
Comments:
breccia; submitted by Ansgar Greshake