Red Lake Gold Mine

Goldcorp OMET project

 

Highlights

As part of the Ontario Minerals Exploration Technologies Program (OMET), Quantec performed a demonstration survey of a new deep exploration geophysical technology (Titan) for Goldcorp Inc. near their Red Lake and Cochenour Mine Sites at Red Lake Ontario. The survey was carried out over two blocks, Red Lake and Marcus Grid.

The location of the Goldcorp OMET Titan survey with respect to Red Lake and the known Ore deposit

 

Multi-technique accurate detailed information to 800 metres with applications for focusing drill programs:

• Gold
• Deep Structural information
• Penetrate Thick overburden
• Focus deep drilling
• Grassroots
• Deep Regional Earth studies
• Massive Sulphides
• Brown ground discovery including highly cultured areas such as existing mine sites

Conclusions from the report

The exploration objectives have been favourably answered, using the Titan-24 distributed acquisition technology and integrated geologic and geophysical interpretation. The Titan system is a viable exploration tool in the mine site environment and in areas of deep conductive cover.

1. This survey successfully demonstrates the capability of the Titan system to map geology with more significant resistivity contrasts and anomalous mineralization below thick overburden. Anomalies and target structures have been identified to depths in excess of 1.5 km. The system will be an effective tool along this exploration trend.
2. The high multiplicity data sets, simultaneous reading and 32bit data acquisition allow very advanced digital signal processing making the Titan system an effective exploration tool in the proximity of noise contaminated mine sites.
3. The information from the Titan survey has provided deep information to depths greater than 1.5 km, which support focused drill campaigns within the exploration volume.
   
   

Exploration Volume showing unconstrained MT resistivity sections note deep resistivity contrasts between key horizons

Red Lake Exploration Volume showing constrained MT resistivity sections with airborne magnetics. Other deep conductive anomalies have been identified within the north block sediments that may be related to iron formation. This is interesting because of the shallow dip that is indicated and the plunge to the southwest appears to be offset, implying additional structural information can be retrieved at depth in this region.

 

Red Lake Ratio M plot for line 5000E developed from the ratio between the starting model and the Constrained MT Inversion. This highlights a very significant feature which may be directly related to the primary ore zone

Red Lake Ratio M plot for line 6000E with Ore body shown. The ratio M plot, is an advanced product on Titan surveys. By comparing the results of the constrained geo-referenced Titan survey inversions with what was assumed to be known i.e. the geologic model. We are able to clearly see areas where the model needs refinement through further exploration. This provides another targeting criteria to the program. Significant new areas for further investigation were identified through this process to depths below 1km.

 

 

Marcus exploration volume showing 3D conductivity anomalies (<1000 ohm-m). The advantages of combining full 3d earth modeling with Titan include the ability to synthesis all historic information and query the model for the intersection of the most favourable geologic environment with the Titan results. The results are fully integrated drill targets which provide enhanced focus both to the whole exploration program as well as specific drill campaigns.

 

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