Base Resources Ltd. said Oct. 4 that an updated resource estimate for the Kwale South Dune deposit at its Kwale operations in Kenya indicated a 29% increase in tonnage and a 13% increase in contained heavy minerals when compared to the 2016 estimate.
Kwale South Dune hosts measured, indicated and inferred resources totaling 114.1 million tonnes at an average heavy minerals grade of 3% and 25% slimes, containing 3.5 million tonnes of heavy minerals. The estimate uses a cutoff of 1% heavy minerals.
The heavy mineral assemblage mainly comprises ilmenite, rutile and zircon.
The previous resource estimate for Kwale South Dune defined measured, indicated and inferred resources of 88.5 million tonnes at an average heavy minerals grade of 3.5% and 26% slimes containing 3.1 million tonnes of heavy minerals.
Base Resources attributed the increase primarily to the discovery of additional, contiguous resources to the south of the deposit.
The company noted that the update increased the confidence of the South Dune resource, with 71% of the tonnage and 76% of the contained mineral now in the measured category.
The Kwale operation includes two deposits, Central Dune and South Dune. The company is mining Central Dune and plans to transition to South Dune in the second half of 2019.