Altura Mining Ltd. on Jan. 30 reported updated reserve and resource estimates for its Pilgangoora lithium property in Western Australia, with reserves increasing 48% and indicated resources increasing 32%, in terms of tonnage.
The company also noted that 75% of indicated resources were upgraded to reserves.
Reserves increased by 9.8 million tonnes to 30.1 million tonnes grading 1.04% lithium oxide, for 313,000 tonnes of contained Li2O in the probable category.
Indicated resources increased by 9.7 million tonnes to 40.3 million tonnes grading 1.0% Li2O, while inferred resources now stand at 2.3 million tonnes grading 0.90% Li2O.
The updated JORC-compliant estimate incorporates data from infill drilling and drilling at depth and uses a cutoff grade of 0.43% Li2O. The previous estimate was completed in September 2016.
A definitive feasibility study on Pilgangoora described a single open-pit mining operation at Pilgangoora with a throughput rate of 1.54 million tonnes per annum to produce an average 219,000 tonnes of 6% Li2O spodumene concentrate.