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.
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