Xstrata said it is planning to spend $130m to extend an open-cut zinc mine in north-west Queensland.

The extension will add another four years of life to the Black Star Open Cut at Mount Isa.

The Black Star extracts ore from underground mining areas.

Xstrata Zinc Australia CEO Brian Hearne said the company is looking to mine about 4.6 million tons of ore from the mine.

The extension is yet to be approved by the company’s executive committee.