• Figure 1 - Boungou location.
• Figure 2 - Boungou artisanal gold workings.
• Figure 3 - Boungou regional geology.
• Figure 4 - Boungou soil sample results and drill status plot.
• Figure 5 - Boungou area laterite cap.
• Figure 6 - Natougou area drill status plot.
• Figure 7 - Natougou cross section.
• Figure 8 - Boungou RC Drill Chips

Boungou Prospect

Location:	Burkina Faso - 320km east of Ouagadougou
Ownership:	100% Orbis Gold (via 3 year option agreement)
Primary Target:	Gold
Highlights:	Large-scale high-order (+50ppb Au) gold-in-soil anomalies
	Extensive artisanal gold workings
	Initial RC drilling intersected wide zones of +0.5g/t Au gold mineralisation from surface
	Flat-lying structures defined over a 600m down-dip extent
	Soil anomalies (+20ppb Au) open in all directions at limit of current survey area

 

The Boungou Gold Prospect is located 320km south-east of Ouagadougou and lies within the Company’s Boungou exploration permit (figure 1).

Shallow artisanal gold mining activity is widespread across the Boungou area and gold is exploited from both alluvial and hard rock (quartz vein-associated) sources (figure 2).

Geologically the Boungou Prospect lies within highly prospective greenstone rocks at the south-west end of the Diapaga Greenstone Belt and is associated with major regional-scale faults (figure 3).

The Boungou Prospect and surrounding Orbis Gold exploration permits have received no prior recorded gold exploration and offer potential for discovery of large-scale gold deposits.

In order to define drill targets in the Boungou area, and to determine the trend of the broader controls on gold mineralisation, Orbis undertook an initial detailed soil sampling program of the greater Boungou area (6km x 4km area - 200m x 50m sample grid).

The soil sampling program defined significant areas of high-order (+50ppb) gold-in-soil anomalism including zones of contiguous and very high-order assays (+100ppb Au) from the Natougou Zone in the south-east corner of the soil survey area (figure 4).

Approximately 10% of the initial soil survey area could not be sampled due to the presence of a hard duricrust (laterite) cap (figure 5). Such areas remain highly prospective for underlying gold mineralisation and will be subject to shallow geochemical drilling to test below the laterite cap.

Reconnaissance RC drilling of selected soil anomalies was completed by Orbis gold during 2012. The drilling focussed on the Natougou Zone and intersected significant widths of +0.5g/t gold mineralisation from surface.

Gold mineralisation in the Natougou area is hosted in multiple relatively flat lying structures that have been defined by Orbis over significant down-dip extents. Gold mineralisation on the “discovery” cross section at Natougou has been defined from surface in successive step-out RC drill holes over a 600m down-dip extent (figures 6 and 7).

The average down hole (approximate true width) intersection from RC drilling on the Natougou discovery cross section is 10.5m @ 2.20g/t Au (above a nominal 0.5g/t Au lower cut-off grade).

Drilling on adjacent cross sections (figure 6) intersected the interpreted structure however drill hole grades were generally below 0.5g/t Au.

A significant program of follow up exploration activities including further drilling and trenching are proposed for the Natougou area. In addition substantial areas of the overall Boungou soil anomaly remain to be tested.

Orbis is yet to define the limit of the Boungou gold system - soil anomalism is “open” in multiple directions with assays recorded at or above 20ppb Au at the limit of the initial 6km x 4km survey area (figure 4).

Orbis recently extended soil sampling to include the entire Boungou exploration permit and adjacent Pambourou permit (figure 3). This survey will seek to define additional drill targets and will provide a more than 20-fold increase in the permit area explored to date. Assays are awaited.