43-101 Technical Report – Mitchi
Mitchi property (30 085 ha approx) located 10 km West of Mitchinamecus reservoir and 100 km North of the town of Mont-Laurier. The project is part of the Mitchi-Wabash mineralized district. The property is more than 310 km2 and is accessible by a well develop forestry roads network and a hydroelectric substation, located 15 km to the East. The Mitchi property is in the North-Western portion of the central metasedimentary belt of the Grenville geological province. The project is a copper-silver sediment-hosted stratiform copper type deposit (‘’SSC’’) in the eastern part of the property, and in the western part it shows more characteristics of a porphyritic system or an Iron Oxide Copper-Gold (IOCG), and/or to a ‘’skarn’’ type. Osisko Mining inc. (« Osisko ») own 2 % royalties from net smelter returns (« NSR ») on 27 claims located outside the sedimentary basin.
The SSC part of the project was discovered in 2017 as part of following up on the historical work from Noranda in the 1970s and other exploration companies in the last 20 years. Because of the poor understanding of the SSC type deposits in the high grade metamorphic conditions such as in the Grenville, the deposit was not discovered until properly studied by the Kintavar exploration team.
The sedimentary basin of over 15km long has now been demonstrated to contain several zones of various thicknesses all starting from surface. Metallurgical studies demonstrated that high grade copper concentrates of up to 59% can be produced with recoveries up to 80%. The main Sherlock area is surrounded by many other zones that could become amendable to open pit mining to support a main large operation.
