With the goal of promoting geochemistry, EAG proudly co-organises several geochemistry related sessions at the EGU General Assembly 2017 (Vienna, 23-28 April). EAG also co-sponsors the short course Petrochronology: Methods and applications (22-23 April, Vienna) and provides support for 10 students. Application deadline: 3 February.
EAG Latest Publications
Water in alkali feldspar: The effect of rhyolite generation on the lunar hydrogen budget
R.D. Mills, J.I. Simon, C.M.O’D. Alexander, J. Wang, E.H. Hauri
Recent detection of indigenous hydrogen in a diversity of lunar materials, including volcanic glass (Saal et al., 2008), melt inclusions (Hauri et al., 2011), apatite (Boyce et al., 2010; McCubbin et al., 2010), and plagioclase (Hui et al., 2013) suggests water played a role in the chemical differentiation of the Moon. […]
Scandium speciation in a world-class lateritic deposit
M. Chassé, W.L. Griffin, S.Y. O’Reilly, G. Calas
Scandium (Sc) has unique properties, highly valued for many applications. Future supply is expected to rely on unusually high-grade (up to 1000 ppm) lateritic Sc ores discovered in Eastern Australia. To understand the origin of such exceptional concentrations, we investigated Sc speciation in one of these deposits. […]
Direct sensing of total alkalinity profile in a stratified lake
M. Ghahraman Afshar, M. Tercier-Waeber, B. Wehrli, E. Bakker
We demonstrate the direct detection of a total alkalinity depth profile through the use of an integrated thin layer electrochemical modulation instrument which acts as an alkalinity sensor. The technique uses a chemically selective proton pump that alters the concentration of hydrogen ions in the thin layer sample. […]
Thoughts and Reminiscences on Experimental Trace Element Partitioning
John H. Jones (NASA Johnson Space Center)
In this issue, John Jones reviews the history of experimental trace element partitioning from his personal point of view. In so doing, he considers experimental and analytical complexities, simple phase equilibria, and thermodynamic considerations. Jones also recounts personal interactions with other geochemists and petrologists.