SISSON PROJECT
CURRENT PROGRESS
The Company is currently advancing a focused work program designed to provide the necessary economic and technical information to support a construction decision. This work includes:
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update of the feasibility study; and
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completion of engineering activities and studies needed to satisfy the technical conditions associated with its in-hand environmental approvals as well as support project finance.
SISSON GEOLOGY​ & RESOURCES
The Sisson property hosts a structurally-controlled deposit of tungsten and molybdenum that is genetically related to Late Devonian granite intrusions. The deposit comprises the contiguous I, II, III and Ellipse Zones, which obliquely span a north-trending, nearly vertical contact between two phases of the Howard Peak Granodiorite to the west and metavolcanic and metasedimentary rocks to the east. Significant mineral resources have been identified in Zone III and the Ellipse zone, both of which are open to further expansion.
Tungsten and molybdenum mineralization mostly occurs in narrow, sheeted, northwest-trending quartz-sulphide veins which surround larger, north-trending shear veins. Tungsten occurs predominantly in the mineral scheelite, and locally in wolframite, with molybdenum occurring in molybdenite. The near-surface Sisson deposit is potentially amenable to open pit mining.
SISSON DEPOSIT MINERAL RESources
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CIM definitions were followed for Mineral Resources.
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Mineral Resources are estimated at a net smelter return (NSR) cut-off grade of US$9.00/t.
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Mineral Resources are estimated using a long-term metal prices of US$350 per mtu WO3 and US$15/lb Mo, and a US$/C$ exchange rate of 0.9:1.
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Metallurgical recoveries for the NSR calculation were 82% for Mo and averaged 77% for WO3 over the life of mine. WO3 recovery is a function of mill head grade.
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Numbers may not add due to rounding.
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The independent qualified person for the estimate is David Rennie, PEng., RPA, with an effective date of February 29, 2012.
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For further details see March 2013 Technical Report filed under the Northcliff profile at www.sedar.com.
sisson Geology Mineralization
