Geological Science and Engineering

Queen's University
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Geological Sciences and Geological Engineering
Geological Sciences and Geological Engineering

SelFrag Lab

Contact Agatha Dobosz at

The SelFrag is used to selectively fragment drill core samples into monominerallic components using high voltage electrical discharges of up to 200 kV. Currently, QFIR is one of only a handful of labs in World with this technology. Selective fragmentation has many advantages over traditional mechanical separation of minerals from whole rock samples, as it can liberate minerals with a high degree of selectivity, produce mineral fragments with clean surfaces, preserve the natural grain size distribution of the sample, and the process does not produce toxic dust.

selFrag availability can be seen here.