G-Probe programme

for microbeam techniques

As part of the IAG’s commitment to improving international geoanalytical performance a plan is currently being developed to expand the scope of its microanalytical testing program called G-probe. In 2009 the G-probe proficiency program will expand to two samples a year offering IAG members an opportunity to test laboratory performance on a diverse set of sample types. The program will combine its traditional natural and synthetic geologic glasses with pressed powder samples representative of polymetallic sulfides, oxides, corals, bones, and organic materials. The program will begin its evaluation of pressed powder suitability in March of 2008 by offering at no cost to IAG members a pressed powder calcium carbonate material spiked with minor and trace elements. Registration will be open until February 15, with sample distribution starting March 3. Data submittal deadline will be April 30th with a final report published in September 2008.

2008	Calcium carbonate (coral, otolith) pressed powder
2009	Synthetic plagioclase glass (Anorthite ??) Gypsum pressed powder
2010	Mid Ocean Ridge Basalt glass Metal sulfide pressed powder
2011	Olivine glass Calcium Phosphate (Bone)
2012	Wolastonite glass Metal oxide pressed powder

Interested laboratories are encouraged to contact:
Ms. J M Cook
International Association of Geoanalysts
British Geological Survey
Keyworth, Nottingham
NG12 5GG,
UK.

Instruction to analysts for G-Probe

Last update: 2008-2-01 Webmaster: pbedard «at» uqac «dot» ca