TECK CORP, Pend Oreille Mine – WA, USA

Multi-metal lead/zinc (MVT type deposit)
Blind test successfully imaging a MVT deposit at ~ 500 m depth


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.


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.


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.


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

Overview of project site showing the ore shell, slices of the 3D inversion and detector locations.

Closeup of ore shell model. Detectors are shown as cubes.

Presented at:

Presented at: