Heva-Hosco
Development Project
Overview
The Heva-Hosco development project is located in the Joannes Township, 20 km east of Rouyn-Noranda. The property is up to 3 km wide and extends east-west for more than 8 km along the Cadillac-Larder Lake break (fault). The property is located in the Abitibi region near several world class gold mines. The project comprises 102 mining claims covering 3,847 hectares. The property hosts two distinct gold deposits, the free-milling (gold, pyrrhotite, pyrite) mineralization at the Heva deposit, and the refractory (gold, arsenopyrite, pyrrhotite, pyrite) mineralization at the Hosco deposit.
The mining district along the Cadillac-Larder Lake break in the Abitibi region has high potential for new discoveries. Past exploration drilling only covers approximately one thousand feet down plunge of the break, leaving the depth of extension of known mineralization open at depth along the strike.
Prior to their acquisition by Hecla, the Heva-Hosco deposit was Aurizon’s primary development asset.
Aurizon’s 2012 Feasibility Study Highlights
- Mineral Inventory: 1.66Moz at 1.26g/t
- Resources: 2.34Moz M&I + 0.27Moz Inf. (Inclusive)
- Gold Price: US$1,350/oz
- Mining Method: Open pit
- Processing Facility: 3.0Mtpa
- Production Profile: 104,000oz/yr
- Mine Life: 14 years
Orezone’s Next Steps
- Advance PEA
- Assess underground and satellite deposit potential
- Revisit geologic model, deposit currently open at depth and along strike
Heva-Hosco Mineral Resource Estimate as of December 31, 2025
Notes for Mineral Resource Estimate on Heva-Hosco Deposit
- Mineral resources at Heva and Hosco are based on a gold cut-off grade of 0.008 oz/ton (0.277 g/tonnes) for open pit and 0.102 oz/ton (3.5 g/tonne) for underground and metallurgical recoveries of 95% for gold at Heva and 81.5% and 87.7% for gold at Hosco depending on zone. Heva and Hosco resources are diluted 20% and reported using a 7% mining loss.