Historic drilling by Husky (1972) defined the ‘Main Zone’ is approximately 975 m long and 5.3 m to 19.5 m wide with drill-indicated reserves (to a vertical depth of 30 m) of 1,336,500 tons grading 1.91% combined Zn and Pb (indicated Zn:Pb ratio is about 10:1 – author). The highest grade intersections were found over a strike length of about 90 m towards the southwest end of the ‘Main Zone’ (named the No. 1 Lens).
Geology and Mineralization: The Borys Lake deposit occurs within northeast trending, steep northwesterly dipping supracrustal rocks at the eastern margin of the Crew Lake Belt of the La Ronge Domain (Fig. 69). These rocks comprise mainly hornblendic and psammopelitic biotitic gneisses that are variably migmatized. The gneisses have suffered at least one major phase of folding and have attained upper amphibolite facies metamorphism.
The deposit lies on the northwestern limb of a major antiform. The core of the antiform, southeast of the deposit, is occupied by predominant hornblendic gneisses. Biotitic gneisses predominate to the northwest of the deposit.
The immediate vicinity of the deposit is underlain by intercalated biolitic gneisses, hornblendic gneisses, and ‘granulites’, calc-silicates and ‘quartzities’. These rocks are invaded by a sill-like body of granodiorite southwest of Borys Lake.
Footwall rocks are mainly hornblendic but include intercalations of biotitic gneiss and ‘quartzite’. The latter, 9 to 24 m thick, lies 45 m to 120 m structurally below the ‘Main Zone’ mineralization and includes laterally persistent, conformable pyrrhotite-pyrite-graphite mineralization. The hanging wall rocks are formed mainly by biotitic and biotite-hornblende gneisses with subordinate hornblende gneiss and calc-silicate units.
The ‘Main Zone’ is hosted predominantly within an approximately conformable, northeast trending shear zone, represented mainly by biotite-chlorite schist. Conspicuous wall rock alteration is variably developed along the mineralized zone. The latter comprises mostly silicification, biotitization, chloritzation and sericitization, accompanies by minor talk and kaolin. Locally, masses of actinolite-tremolite-diopside form the predominant alteration, especially where galena becomes conspicuous.
Mineralization is formed by pyrrhotite and sphalerite with lesser galena, pyrite and chalcopyrite. The sulphides occur as fine dissemination, isolated biebs and rare veinlets. Locally, massive sphalerite-galena mineralization occurs within quartz-rich veins and lenses. The No. 1 Lens apparently plunges 30 to 40 degrees to the southwest, within the plane of the shear zone.”
* Peter Born P.Geo., the Company’s Qualified Person and Director, has neither reviewed the original Bory’s Lake drilling data or reserve calculations. The reserves reported herein are not NI43-101 compliant and although were prepared by what is assumed to be reputable professionals and are believed to be they cannot be relied upon. These estimates are only relevant in assessing the potential type and dimension of a deposit that could exist and which must be confirmed through drilling and subsequent estimates by the Company. Geological and exploration information contained in this release is derived from sources believed to be credible.