Star Zinc is a willemite zinc silicate located some 20 km northeast of Lusaka. The deposit has had limited exploration since 1920 and resource statements vary from 250,000 – 350,000 tonnes at a zinc percentage of 20% per tonne. There has been limited mining both formally and informally with the resultant material being treated at the Kabwe plant.
This type of ore body was considered very difficult to process until recent years where a number of operations have come into production. The process generally involves leaching and recent developments show good recoveries with good concentrate grades arising from the unusually high zinc ore input grade.
The Company has embarked upon a fast track exploration programme with the intention of increasing the tonnage of raw ore at similar grades to produce a contained zinc resource in excess of 200,000 tonnes.