Projects

Case Study 1: Sanbrado Gold Project

Project Summary

  • The Sanbrado Gold Project is a high-grade orogenic gold discovery in Burkina Faso. The Sanbrado deposit is located within a northeast trending volcano-sedimentary belt that is associated with the Lower Proterozoic system of the Birimian comprising metavolcanic (arc) and metasedimentary (basin) rocks.
  • Gold mineralisation in the project area is associated with sheared and boudinaged quartz vein and veinlet arrays, silica, sulphide and carbonate-albite, tourmaline-biotite alteration. Gold is free and is mainly associated with minor pyrite, chalcopyrite and arsenopyrite disseminations and stringers that are foliation controlled.
  • The orogenic gold deposit was found through a combination of interpretation of airborne geophysics, detailed structural mapping, soil geochemical sampling and follow-up AC, RC and diamond drilling.
  • Geological models of the major lithologies, oxidation and alteration were constructed and used to assist in guiding the mineralisation interpretation. Mineralisation wireframes were constructed to constrain the block models for resource estimation.

Key Outcomes

  • Probable Reserves of 894,000oz (16.8Mt at 1.7g/t gold)*.
  • Indicated Resources of 1.3Moz (29.6Mt at 1.4g/t gold using a 0.5g/t cut-off)*.
  • Positive Definitive Feasibility Study released in February 2017.
  • Mining and Environmental Permits approved.
  • Resource updates have consistently delivered an increase in resource ounces and grade. Most recently delivering a 150% increase in ounces and 100% increase in grade*.

*effective date February 2017.

Case Study 2: Zanaga Iron Ore Project

Project Summary

  • The Zanaga Iron Ore Project is a World class iron ore exploration and development project located in the Republic of Congo. The Zanaga project area is located within a Precambrian greenstone belt in the eastern part of the Chaillu Massif in south-western Congo.
  • The mineralised trend constitutes a large, well defined ore body up to 50km strike length and 3km width. The ferruginous beds are part of a metamorphosed, volcano-sedimentary itabirite/banded-iron-formation (BIF).
  • As a result of prolonged tropical weathering the BIF has developed a distinctive supergene iron enrichment profile. The friable itabirite supergene enriched zone contains an average grade of 40% Fe and includes higher grade material with >60% Fe direct shipping ore (DSO). The more competent itabirite and fresh BIF zones contain an average grade of 33% Fe.
  • The deposit was found through a combination of interpretation of airborne geophysics, ground geophysics (resistivity and GPR), detailed structural mapping, soil geochemical sampling and follow-up AC, RC and diamond drilling.
  • Geological models of the major lithologies and oxidation were constructed and used to assist in guiding the mineralisation interpretation for wireframe and block model development.

Key Outcomes

  • Probable and Proved Reserves of 2.1Bt at 34% Fe.
  • Measured, Indicated and Inferred Resources of 6.9Bt at 32% Fe.
  • Pre-Feasibility, Staged Development Scoping Study and Positive Definitive Feasibility Study completed.
  • Mining Licence granted and Mining Convention agreed.
  • Social Environmental Impact Assessment completed and Environmental Permit awarded.