Exciting Developments in Ore Sorting at Cariboo Gold Project
Osisko Development Corp. has recently shared remarkable outcomes from its bulk tonnage ore sorting testing program, utilizing a substantial sample derived from the Cariboo Gold Project. This compelling study, targeting about 80 tonnes of material retrieved from the underground workings, has yielded impressive findings that align with anticipated parameters outlined for the 2025 Feasibility Study (FS).
Key Findings from Testing
The tests highlighted a noteworthy 42-55% waste rejection while achieving a remarkable gold recovery rate ranging from 84-89%. The tests specifically focused on mid-size and oversize materials, particularly particle sizes between 10–30 mm and 30–70 mm. Notably, results from the 6–10 mm size fraction, recently assessed due to advancements in artificial intelligence (AI), indicated a striking 59% waste rejection coupled with an exceptional 95% recovery of gold, showcasing further optimization potential.
Comprehensive Data from Larger Sample Size
Testing represented an extensive dataset compared to prior sorting campaigns, which involved only approximately 5 tonnes of sample material mainly sourced from drill cores. These efforts not only affirmed the 2.0-2.1 upgrade ratio—consistent with the 2025 FS assumption of 1.95—but also confirmed that an estimated 76% of the gold content resided in the fines fraction (under 10 mm).
Flow Optimization and Future Plans
In anticipation of ongoing engineering efforts, further optimization of the ore sorting flowsheet is under consideration. The recent data will serve a vital role in refining deposit assumptions and enhancing the strategic approach for the Cariboo Gold Project.
Collaboration with Industry Experts
This testing program was executed by the Saskatchewan Research Council (SRC) in collaboration with TOMRA Sorting. The state-of-the-art x-ray transmission (XRT) technology enabled the analysis of the samples, significantly enhancing material sorting capabilities and refining operational costs. Operating at roughly C$1-2 per tonne, this technological application efficiently segregates valuable sulfide material from unmineralized waste based on atomic density, ultimately producing predominantly non-potentially acid generating (NPAG) waste.
Innovative Methodologies in Testing
Following a rigorous protocol, part of the process included the crushing, screening, and systematic splitting of material to produce various size fractions for sorting. This approach enabled detailed evaluations of material recovery across different categories, spearheading further investigations into the previously unassessed size fraction of 6–10 mm.
Future Opportunities and Project Insights
The insights gained from these results may open doors to higher recovery rates and improved operational frameworks. As Osisko Development paves the way forward, plans for an in-depth variability study encompassing both laboratory and full-scale assessments will correlate with the goal to refine sorting operations throughout the deposit.
About Cariboo Gold Project
The Cariboo Gold Project stands as a permitted, feasibility-stage project under the complete ownership of Osisko Development. Situated in the historic Wells-Barkerville mining district, this ambitious project spans roughly 186,740 hectares and hosts enticing mineral resources. The mining-friendly jurisdiction underscores the project as shovel-ready with a significant land package comprising 443 mineral titles.
Engagement with Qualified Experts
The technical aspects of the project undergo thorough scrutiny by qualified personnel, including Tad Crowie and Victor Gauthier, who ensure that the methodologies align with industry standards and regulatory requirements.
Osisko Development: A Commitment to Responsible Mining
Osisko Development is committed to responsible mining practices while propelling the Cariboo Gold Project to potential production stages. The company embraces a forward-thinking outlook toward mining advancements while respecting environmental and social responsibilities.
Frequently Asked Questions
What were the key results from Osisko Development's testing?
The tests showed a waste rejection of 42-55% and a gold recovery rate between 84-89%, with exceptional results in smaller particle sizes.
How does the ore sorting process work?
The ore sorting utilizes X-ray technology to differentiate between valuable sulfide materials and waste rock based on their density.
What future steps are planned for the Cariboo Gold Project?
Future steps include a variability study and further optimization of the flowsheet to enhance selections across different size fractions.
What is the overall focus of Osisko Development Corporation?
Osisko Development aims to develop advanced mining projects with a commitment to sustainability and environmental stewardship in reputable mining regions.
How can I find more information about Cariboo Gold Project?
Further details can be accessed through Osisko Development’s website, which provides comprehensive insights into operational activities and project specifics.
