Multiple EM and IP Anomalies Define 1200m Strike at Dasserat Prospect
Olympio Metals has identified multiple coincident EM and IP anomalies at its Dasserat prospect in Quebec, setting the stage for a drilling campaign planned for early February 2025.
- Multiple EM anomalies confirmed at Dasserat porphyry gold-copper target
- EM anomalies coincide with a large historical IP anomaly over 1200m strike
- Dasserat prospect analogous to nearby 1.4 Moz AuEq Galloway resource
- Drilling approvals progressing, with mobilization expected early February 2025
- Dufay Project located along prolific Cadillac Break regional structure
Exploration Advances at Dasserat
Olympio Metals Limited (ASX:OLY) has announced significant progress in its exploration efforts at the Dasserat prospect, part of the broader Dufay Project in Quebec. A recent ground electromagnetic (EM) survey completed in mid-January 2025 has delineated multiple EM anomalies that align closely with a previously identified induced polarization (IP) anomaly extending over 1200 metres. This geophysical coincidence strengthens the case for a substantial porphyry-style gold-copper mineralisation target.
The Dasserat prospect has long been recognized for its potential, given its geological similarity to the nearby Galloway deposit, which hosts an inferred resource of approximately 1.4 million ounces of gold equivalent. Despite this, Dasserat has never been drill tested, making the upcoming drilling campaign a critical step in validating the prospect's resource potential.
Geophysical Survey Details and Interpretation
The recent EM survey employed Surface Time Domain Electro Magnetics (STDEM) with a Crone Pulse-EM system, covering a 1.3 by 1.3 kilometre area with three north-south oriented survey lines. The anomalies detected are consistent with disseminated sulphide mineralisation typically associated with porphyry gold-copper systems. Maxwell plate modelling of the EM data revealed conductors with shallow depth to top and moderate to steep dips, which coincide spatially with the historical IP chargeability anomaly.
These geophysical signatures suggest the presence of sulphide mineralisation along altered and sheared horizons adjacent to syenite porphyry intrusives, a hallmark of porphyry deposits. The integration of EM and IP data provides a robust framework for targeting drill holes designed to intersect mineralised zones.
Strategic Location and Project Context
The Dufay Project sits along the Cadillac Break, a major terrane-bounding structure renowned for hosting world-class orogenic and volcanic massive sulphide (VMS) gold and copper deposits. Located just 35 kilometres west of the Rouyn-Noranda mining centre and copper smelter, the project benefits from proximity to established mining infrastructure and a prolific mineralised district.
Olympio's Managing Director, Sean Delaney, highlighted the quality of the geophysical data and the readiness for drilling: "The TMC Geophysics crew have done a great job completing the EM survey at the Dufay Project. The coincident EM and IP anomalies at Dasserat are encouraging and consistent with the disseminated sulphide mineralisation we are targeting. We anticipate mobilising for drilling in early February once approvals are secured."
Upcoming Drilling and Exploration Outlook
The company has designed a drilling program comprising eight holes totaling approximately 1,200 metres to test the combined EM and IP anomalies at Dasserat. Drill permit approvals are expected imminently, with site preparations and track clearing underway. This campaign represents the first modern drilling effort at Dasserat and could unlock significant value if mineralisation is confirmed.
In parallel, a smaller EM survey at the Chevrier prospect revealed less conductive mineralisation, but drilling is also planned there to test historic sulphide occurrences. Together, these programs underscore Olympio's commitment to advancing its Quebec portfolio in a highly prospective geological setting.
Bottom Line?
As Olympio Metals prepares to drill its most promising target yet at Dasserat, the market will be watching closely for results that could reshape the company’s growth trajectory.
Questions in the middle?
- Will the upcoming drilling confirm the extent and grade of the porphyry gold-copper mineralisation at Dasserat?
- How might the Dasserat results influence Olympio’s exploration strategy across the broader Dufay Project?
- What are the potential timelines and capital requirements for resource definition and development if drilling is successful?