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Sega

~600,000 oz @ 1.7 g/t, with upside potential

Summary

  • 5 main zones with 450,400 oz Measured and Indicated + 147,300 oz Inferred resources
  • Average grade 1.7 g/t and approximately 50% of the resources are oxidized.
  • Gold mineralization is hosted in shear zones and is closely associated with quartz veins
  • Metallurgical testing  indicates recoveries of more than 90% for CIL and 85% for heap leach of oxidized resources
  • 150 km northwest of Ouagadougou, and 18 km north of the heap leach Kalsaka mine
  • Preliminary Economic Assessment due in 2011for a heap leach facility (~60,000 oz/year)
  • 100% owned (Projects are subject to a government 10% free carried interest and net smelter royalty)

Description

Orezone's 313 km2 Sega Project has 450,400 oz of gold in the Measured and Indicated categories (~1.7 g/t) and 147,300 oz in the Inferred category (1.6 g/t). These resources occur in five main zones that are within a 16 km2 area. Orezone holds a 100% interest in the Sega Project and is currently investigating its potential as a heap leach operation.

The property is located near the town of Séguenega, 150 km northwest of the Burkina Faso capital of Ouagadougou, with good access via a paved road for the first 100 km from Ouagadougou to Koungoussi and then for 50 km on a well maintained laterite road. A government-funded, +40 million m3 water retention dam is under construction near the project and may be used to supplement any future mine water supply. Grid power is also expected to be accessible within the next two years.

Geology

The project lies within the Birimian greenstone belt. The property is underlain by sedimentary sequences and mafic volcanic formations affected by multiphase folding and metamorphism, intruded by mafic and felsic intrusives and also affected by deep weathering.

Mineralization

The gold mineralization is hosted in shear zones and is closely associated with quartz stockworks at the contact between meta-sediment and volcanic rocks. The auriferous veins occupy openings within the shears and in the adjacent altered rocks.

Gold mineralization is dominantly associated with strike-slip shear zones that developed in response to sub-horizontal compression. The composite shear zone array includes reactivated, pre-existing structures (probably Gambo) as well as newly formed shear zones (RZ). Non-vertical structures such as Gambo underwent oblique thrusting instead of strike-slip shearing.

2011 Priorities

  • Ground geophysics, auger drilling, followed by expansion drilling
  • Completion of Preliminary Economic Assessment
  • Completion of Pre-Feasibility Study in Q4 2011 for a small heap leach facility

Reports