A University of Exeter geologist in the UK has developed a new method to cost-effectively discover porphyry-type copper deposits.
Dr Ben Williamson collaborated with Dr Richard Herrington from the Natural History Museum, London, to develop this new method.
Go deeper with GlobalData
The porphyry-type copper deposits provide around 75% of the world’s copper and a bit of molybdenum and gold.
They are relatively rare and originally form at several kilometres depth below the surface of the Earth, above large magma chambers.
Mining major Anglo American has funded the project, which compared the chemical compositions of minerals from magmatic rocks that host porphyry deposits against those that are barren.
See Also:
In order to test the theory, Williamson and Herrington carried out field tests of a major new porphyry discovery in Chile.
How well do you really know your competitors?
Access the most comprehensive Company Profiles on the market, powered by GlobalData. Save hours of research. Gain competitive edge.
Thank you!
Your download email will arrive shortly
Not ready to buy yet? Download a free sample
We are confident about the unique quality of our Company Profiles. However, we want you to make the most beneficial decision for your business, so we offer a free sample that you can download by submitting the below form
By GlobalDataThe tests found that the magma chamber below the porphyry undergoes discrete injections of water-rich melts or watery fluids, which improve its ability to transfer copper and other metals upwards to form a copper deposit.
Williamson said: "This new method will add to the range of tools available to exploration companies to discover new porphyry copper deposits.
"Our findings also provide important insights into why some magmas are more likely to produce porphyry copper deposits than others, and add to our understanding of how their parent magmatic rocks evolve."
Image: Magmatic rock formed a large porphyry deposit in Chile. Photo: courtesy of University of Exeter.
