Pend Oreille

Blind test successfully imaging a MVT deposit at ~500 m depth

PROJECT OVERVIEW

This blind test of muon geotomography demonstrated the effectiveness of the technique to image a Mississippi Valley Type (MVT) deposit. It also showed that a compact ore shell model could only be produced with a combination of muon tomography and 5% of the drill data.

SITUATION

Teck’s MX700 deposit is an MVT lead/zinc ore body deep underground in Washington state, USA. It had been well-drilled and its wealth of geological data would provide a good blind test for muon geotomography. Afterwards it could be used to study how few drill holes would be required to produce a good ore shell model.

IDEON SOLUTION

Placing four muon detectors at depths of ~490 m provided good views for 3D imaging. First a blind test was performed; then the geological model was refined using a combination of muon geotomography and 5% of the available drill data.

OUTCOME

Successful blind test with muon geotomography, followed by a refined ore shell model combining muon tomography and 5% of the drill data.