Report (1984) on Two GIT-IWG Geochemical Reference Samples: Albite from Italy, AL-I And Iron Formation Sample from Greenland, IF-G

Two reference samples, Albite AL-I and Iron Formation sample IF-G were analysed for their chemical composition by the International Working Group "Analytical Standards of Minerals, Ores and Rocks" (GIT-IWG). AL-I was processed in 189 kg and IF-G and 760 kg. 103 GIT-IWG laboratories participated in this collaborative study along with 171 geoanalysts. This study lasted 15 months (September 1982 - December 1983) and is the second undertaken by the GIT-IWG. Over 2400 units of data were collated. As a result of this international study, the major and minor elements have been well characterized in both the samples; however, more data on trace elements will be very welcome for a better definition of trace elements, although working values have been proposed for about forty trace elements in each sample. The first and the second collaborative studies undertaken by GIT-IWG demonstrate well the immense analytical potential of the GIT-IWG.