The Tinta Hill Property was first discovered in the 1930s and has undergone numerous exploration programs since that time. Exploration to date has consisted of trenching, soil sampling, geophysical surveys, diamond drilling (over 11,000 feet/3350 m), and driving of two adits. This work has focused on a 3500 foot (1067 m) section of the main mineralized shear zone which extends over a length of 11,500 feet (3,505 m), with an average true thickness of 5.35 feet (1.6 m). Drill indicated resource calculations on this zone estimate 1,875 tons/vertical foot of 0.075 oz Au/ton, 5.35 oz Ag/ton, 4.71% Pb, 6.03% Zn, 0.37% Cu and 0.049% Cd. Yukon government reports state that the Tinta Hill Deposit contains 700,000 T grading 10 g/T Au and 240 g/T Ag (unconfirmed).
Inferred Mineral Resource Estimate for the Tinta Deposit (July 2009)
The potential to expand the resource on the property is excellent as the zone is open to the northwest, the southeast and to depth. Additional subparallel and parallel zones located by the VLF-EM survey have been partially tested.
The property lies within an unglaciated portion of the Dawson Range. The principal rock type on the property is a granodiorite to quartz diorite/monzonite of Triassic (?) age. The intrusive is generally medium to coarse grained and locally porphyritic. Gneissic amphibolite occurs to the north of the main shear zone. Surrounding rocks are volcanics consisting of dacite, andesite and ryholite porphyrys. Mineralization on the property is confined to several shear zones. Quartz-carbonate veins within and outside the main shear contain auriferous pyrite, sphalerite, galena, chalcopyrite and argentiferous tetrahedrite. Locally, veins have been altered to clay minerals. Pyrite, sphalerite, galena and chalcopyrite also occur as veinlets and disseminations in both hangingwall and footwall altered host rocks. The main mineralized shear zone has been identified as a pinch-and-swell structure over a length of some 11,500 feet, which is open at both ends. A second major vein system appears to parallel the main vein, approximately 150 m to the north.
In 1975, preliminary metallurgical testing consisting of flotation tests on core rejects
was conducted on samples with an average head grade of 7.58% Pb, 9.37% Zn and 9.58 opt Ag. In lead concentrate, the best results reported were 94.5% Pb, 11.1% Zn and 89.9% Ag; while zinc concentrate reported 81.0%Zn, 0.8% Pb and 2.7% Ag
Three exploration adits were driven on the property with the following drift samples reported:
Adit 1: 94 m of vein grading 6.8 gpt Au, 164.6 gpt Ag, 1.0% Cu, 5.6% Pb, 13.2 % Zn over an average width of 76.2 cm
Adit 2: 31 m of vein grading 7.54 gpt Au, 120 gpt Ag, 0.8% Cu, 1.3% Pb, 3.8 % Zn over average width of 60 cm and 35.7 m of vein grading 27.8 gpt Au, 696.0 gpt Ag, 3.6% Cu, 6.5 Pb, 2.8 % Zn over an average width of 53 cm.
45 drill holes were completed on the property between 1960 to 1988 for a total of 11,650'.