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7.2.3 NORTH ZONE
The North Zone is located in the east-central portion of a narrow 1,200 m long sill
positioned approximately 150 m below the main ultramafic unit. It was discovered by
Hudson Yukon Mining in the 1950s and explored in 1987 with three drillholes by All-
North. All of these drillholes intersected mineralization, and the best reported
intersection was 0.51% copper, 2.01% nickel, 0.96 g/t platinum and 0.65 g/t palladium
over a core length of 3.4 m. The geology of this zone is similar to both the East and
West Zones. Mineralization consists of massive sulphide lenses, disseminations in
gabbro and ultramafic rocks, and as fracture fillings in footwall quartzite. The North
Zone was tested in 1988 by limited drilling and was determined to have a northerly dip.
This will make it difficult to adequately explore from the surface through drilling from the
south, as has been done with the other zones on the Property. To-date, the North Zone
appears to be a thin and discontinuous zone, but represents an interesting area of
nickel-copper mineralization that warrants further work.
7.2.4 MINERALS
Table 7.1 to Table 7.3 after Cabri et al. (1993) lists the opaque minerals and PGM
and PGE-bearing minerals found in the deposit. The elevated presence of rhodium,
ruthenium, iridium, rhenium, and osmium within the mineral suite provided additional
pay metals. If recoverable they could enhance the economics of an operation in the
district.
Rhodium is present at Wellgreen in anomalous concentrations as compared to the
concentrations found in Noril’sk ores in Russia (Hulbert 1997).
Table 7.1 Opaque Minerals Observed in the Wellgreen Deposit
Major Minerals*
Pyrrhotite Fe1-xS
Pentlandite (Fe, Ni)9S8
Chalcopyrite CuFeS2
Pyrite FeS2
Magnetite Fe2O4
Ilinenite FeTiO3
Less Common to Rare Minerals*
Violarite FeNi2S4
Sphalerite (Zn,Fe)S
Chromite FeCr2O4
Cobaltite** CoAsS/NiAsS
Arsenopyrite FeAsS
Ulimannite NiSbS
Siegenite argentopentlandite (Ni, Ag(Fe,Ni)8S8
table continues…
Prophecy Platinum Corp. 7-10 1193460500-REP-R0001-02
Wellgreen Project Preliminary Economic Assessment,
Yukon, Canada