The findings were published in the December issue of Nature Geoscience.
Robert Linnen, the Robert Hodder Chair in Economic Geology in Western's Department of Earth Sciences conducts research near Kirkland Lake, Ontario and says the results of the study could lead to a breakthrough in choosing geographic targets for gold exploration and making exploration more successful.
Noble metals, like gold, are transported by magma from deep within the mantle (below the surface) of the Earth to the shallow crust (the surface), where they form deposits. Through a series of experiments, Linnen and his colleagues from the University of Hannover (Germany), the University of Potsdam (Germany) and Laurentian University found that gold-rich magma can be generated in mantle also containing high amounts of sulphur.
"Sulphur wasn't recognized as being that important, but we found it actually enhances gold solubility and solubility is a very important step in forming a gold deposit," explains Linnen. "In some cases, we were detecting eight times the amount of gold if sulphur was also present."
Citing the World Gold Council, Linnen says the best estimates available suggest the total volume of gold mined up to the end of 2009 was approximately 165,600 tonnes. Approximately 65 per cent of that total has been mined since 1950.
"All the easy stuff has been found," offers Linnen. "So when you project to the future, we're going to have to come up with different ways, different technologies and different philosophies for finding more resources because the demand for resources is ever-increasing."
Linnen's research was funded by the Natural Sciences and Engineering Research Council (NSERC).
Maureen Spencer Golovchenko | EurekAlert!
NASA looks to solar eclipse to help understand Earth's energy system
21.07.2017 | NASA/Goddard Space Flight Center
Scientists shed light on carbon's descent into the deep Earth
19.07.2017 | European Synchrotron Radiation Facility
Physicists have developed a new technique that uses electrical voltages to control the electron spin on a chip. The newly-developed method provides protection from spin decay, meaning that the contained information can be maintained and transmitted over comparatively large distances, as has been demonstrated by a team from the University of Basel’s Department of Physics and the Swiss Nanoscience Institute. The results have been published in Physical Review X.
For several years, researchers have been trying to use the spin of an electron to store and transmit information. The spin of each electron is always coupled...
What is the mass of a proton? Scientists from Germany and Japan successfully did an important step towards the most exact knowledge of this fundamental constant. By means of precision measurements on a single proton, they could improve the precision by a factor of three and also correct the existing value.
To determine the mass of a single proton still more accurate – a group of physicists led by Klaus Blaum and Sven Sturm of the Max Planck Institute for Nuclear...
The research team of Prof. Dr. Oliver Einsle at the University of Freiburg's Institute of Biochemistry has long been exploring the functioning of nitrogenase....
A one trillion tonne iceberg - one of the biggest ever recorded -- has calved away from the Larsen C Ice Shelf in Antarctica, after a rift in the ice,...
Physics supports biology: Researchers from PTB have developed a model system to investigate friction phenomena with atomic precision
Friction: what you want from car brakes, otherwise rather a nuisance. In any case, it is useful to know as precisely as possible how friction phenomena arise –...
21.07.2017 | Event News
19.07.2017 | Event News
12.07.2017 | Event News
24.07.2017 | Health and Medicine
24.07.2017 | Automotive Engineering
21.07.2017 | Earth Sciences