The Western Australia and future Ontario gold miner reported production of 64,009 ounces of gold and 243t of copper for the December quarter, with broadly similar quarterly sales (at all-in sustaining costs of A$1633/oz), taking first half sales to 124,600oz of gold and 451t of copper.

For the full year the company has previously given a forecast of 235,000-255,000oz and 600-1000t of copper at an AISC range of A$1550-1650/oz.

Post-quarter the company completed the acquisition of Harte Gold for circa US$128 million, with Harte an indebted Canadian miner Silver Lake aims to turn around.

Sliver Lake's cash and bullion of A$274 million at quarter end (which excludes $17.5 million of gold in circuit and concentrate on hand), reflected an underlying $17 million cash build during the quarter and $101.9 million in outflows associated with the acquisition of Harte.

A strategic review of Harte is planned, with no time frame outlined by the typically guarded Silver Lake.

Capital markets firm Argonaut said the miner has "enacted a head down strategy for the second half which we expect will generate cash at a firm rate".

Shares in Silver Lake were down 12.5% to $1.46 in afternoon trade, capitalising it at $1.3 billion.