"We just said we would be willing to ease our demands, but it must be a double-digit increase that is worth the workers' while," the South African Press Association quoted Seshoka as saying.
Another gold-mining operation, Harmony, said the strike had heavily affected most of its operations but that it continued to engage with unions to reach a settlement.
"We are encouraged by the responsible and peaceful conduct of employees engaged in the strike, and urge all parties to uphold the law and all agreements," said Graham Briggs, Harmony's chief executive officer.
President Jacob Zuma has urged both sides to reach agreements. South Africa's mining industry has been hit by rising costs, diminishing production and labor unrest in recent years.
Some 46 people were killed during a six-week period of labor unrest over wages at Lonmin's platinum mine last year in Marikana, northwest of Johannesburg. In one incident, police fired into striking miners near the Marikana mine on Aug. 16, killing 34 people and prompting an official inquiry that is still underway.