Wellgreen Project Preliminary Economic Assessment ... - OTCIQ.com

SUMMARY
TerraMS-12JUL-001 Wellgreen - Pt-Pd Minerals Deportment – LCT01 Tails
The present document reports information concerning the deportment of Platinum- and Palladium-bearing
particles encountered in two tail products (Test LCT-1) generated from the Wellgreen ore from the
Prophecy Platinum Yukon project metallurgical test program. The main scope of the present mineralogy
examination was to determine the PGE mineral mode of occurrence and gangue associations, with a
secondary objective of outlining the broad PGE mineral families observed.
A total of ninety- four and nineteen PGE particles were identified in the Nickel 1 st Cleaner tail and Nickel
Scavenger Tail samples, respectively.
Two broad categories of PGE minerals were identified. Platinum was identified only in sperrylite (PtAs2,
abbreviation Pt-As), whereas Palladium was encountered in a series of Palladium-Antimonite and
Palladium (+/- Sb, Ni) telluride. Finally one grain of auro-cuprite (?) was also observed in the Ni 1 st
Cleaner tail sample.
PGE minerals predominately occur as liberated particles in the Nickel 1 st Cleaner tail. In contrast, only
minor amounts of liberated grains (all of them sperrylite) are deported to the Nickel Scavenger tail,
whereas the bulk of PGE minerals reports to this tail sample as inclusions or intergrown with gangue
minerals.
Most of the non-liberated PGE minerals occurring in the Nickel 1 st Cleaner Tail are intergrown with
pyrrhotite and only minor amounts are associated with magnetite or silicate gangue. In the Nickel
Scavenger tail, two-thirds of the PGE minerals are also intergrown with sulphide (chiefly pyrrhotite), yet
approximately 21% are also associated with silicate gangue.
The entire group of identified PGE mineral grains present re-calculated diameters that can be best
described as extremely fine grained. Most grains are less than 3 µm in diameter with an average diameter
not exceeding 1.5 µm.
Terra Mineralogical Services Inc.
July 9, 2011
Giovanni Di Prisco, Ph.D., P.Geo.
Consulting Geologist – Mineralogist
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