- Airborne geophysical survey previously flown over the entire concession (15,000 line km) by Moydow Mines.
- Follow-up work included 102 ground magnetic survey grids over airborne anomalies.
- 29 compelling exploration targets identified from this work.
- 11 targets drill tested – 4 confirmed kimberlite pipes.
- Work stopped in 2009 in response to the Global Economic Crisis.
- The Tchicapa & Luachimo Rivers cut into basement lithologies providing excellent potential for sampling of the diamond-bearing Cretaceous horizons.
- Angolan Kimberlites are Cretaceous in age (~99 my), with a subordinate Tertiary (~23 my) population.
- Diamonds released during erosion are concentrated in the river systems and the basal unit of the Calonda Formation.
- Extensive exposure of diamond-bearing Calonda Formation rocks occur along the length of the Tchicapa River.
- A variety of Quaternary alluvial deposits occur within the river valleys, e.g. river-bed, terrace & hillslope deposits.
Successful Garimpeiro Operations
A group of garimpeiros is conducting small scale alluvial mining within the Dala Concession. Despite only processing small volumes of gravel, they regularly recover high quality diamonds, including a 47.36 carat gem recovered from the Luachimo River in July that has an estimated value of approximately USD$1 million (~$20,000/ct).