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*

Forwarded below is a letter I received last month, and I have 
received confirmation from the sender that all probe labs are 
eligible to participate in the mentioned round robin, not just 
members of the International Association of Geoanalysts which 
sponsors it.  [Note there is a reference to you sending your G-Probe 
account number...I assume this is not critical].

Contact Stephen Wilson if you wish to receive material and participate.

=======================================================================

Date: July 2006
Ref: G-Probe-3

Dear Colleague,

I am pleased to say that the International Association of Geoanalysts 
is now ready to lauch round 3 of the G-Probe proficiency testing 
programme designed for microbeam laboratories involved in the routine 
analysis of silicate minerals. The G-probe-3 sample is a fused 
silicated glass prepared by Stephen Wilson, US Geological Survey, 
Denver, Colorado, USA.

If you would like to participate in the G-Probe-3 round, the sample 
must be claimed from the USGS at any time before the end of October 
2006. Laboratories are then requested to mount, polish and analyse 
two pieces of the glass and submit results to the organisers by 15th 
December 206 in accordance with the instructions that will be sent 
out with the sample.

If you would like to participate in G-Probe-3, please request a 
sample by sending your FULL POSTAL ADDRESS and G-Probe account number 
(see address label) to:

Dr Stephen Wilson, Coordinator, USGS Reference Material Project, 
USGS, Box 25046  MS 973, Denver Federal Center, Denver, CO 80225, USA
email [log in to unmask]

Yours sincerely,

Phil Potts
The Open University
Walton Hall
Milton Keynes
UK
MK7 6AA
[log in to unmask]
 =======================================================================
-- 
========================================================
John Fournelle, Ph.D.	       office: (608) 262-7964   cell: (608) 438-7480
Cameron Electron Microprobe Lab   lab: (608) 265-4798
Dept of Geology & Geophysics      fax: (608) 262-0693
University of Wisconsin          home: (608) 274-2245
1215 West Dayton St.            email: [log in to unmask]
Madison, WI 53706		amateur radio: WA3BTA
      Personal    http://www.geology.wisc.edu/~johnf/
      Probe lab   http://www.geology.wisc.edu/~johnf/sx51.html
Probe Sign Up Calender: 
http://www.microscopy.wisc.edu/cgi-bin/calendar/microprobe/calendar.cgi

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