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Tuesday, February 28, 2023 - 22:47:41
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Mining News Pro - New research shows that it is possible to mine zircon textures to identify valuable mineral deposits.
In a paper published in the Journal of Geophysical Research: Solid Earth, Chetan Nathwani and his colleagues at Imperial College London explain that zircons are common, hardy minerals that can be found in rocks up to 4 billion years old. Their structure and texture can reflect the conditions in which they formed, earning them a reputation as nature’s time capsules.
Knowing this, Nathwani and his team developed a method to distinguish minute differences between zircon grains formed in copper-associated rocks and granitic rocks. Their method could help scientists search for mineral deposits and probe the origins of different sediments.
The researchers used a machine learning tool called a convolutional neural network (CNN), which specializes in image analysis.
Using samples collected in southern Peru, a region that produces much of the world’s copper, they found that the CNN could identify shapes and textures unique to zircons found near copper deposits. The model could also distinguish these copper-associated zircons from zircons found in other kinds of rock in the region with an 85% success rate.
Copper has broad industrial applications, from electronics to construction, and the study suggests that pairing machine learning with more traditional techniques could make it easier to explore and identify copper deposits.
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