[meteorite-list] K/T Boundary Clay

[Ed Majden]

Hello Group:
	Does anyone have any experience with K/T Boundary Layer materials?   
I have obtained a sample of Boundary Clay Granulates from Stevens  
Klint/Denmark.  There is some dispute with this material, as some  
think it may be of volcanic origin, rather than a meteorite impact, K/ 
T boundary layer material.  Has anyone tried to extract spherules  
from such samples?  If so, how did you do it?  Is a SEM required or  
will a regular microscope work?  Any info on this would be appreciated.
Thanks:
Ed