Ken:

I haven't seen any IP data over kimberlite.  I would expect that a weathered 
kimberlite would have clay magnitude.  The highest response from massive clay I've 
seen is 8msec for 2sec on-2sec off pulse.  More typically, an IP response from clay is 
around 4msec.    


-----Original Message-----
From: Witherly, Ken K 
Sent: Tuesday, June 29, 1999 9:43 AM
To: 'SEG Mining Committee'
Subject: [SEGMIN]: IP Response of Kimberlites


Dear All:

I have been trying to get a better idea of the IP response of kimberlites. I have a 
paper written by Jim McNae where he suggests a quite low value (~3 msec). Any other 
comments?

Regards

Ken


EOM 

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EOM 

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