Johannesburg - Shares in Sibanye Gold tumble more than 3 percent as the South African gold producer says first-half earnings likely fell as much as 52 percent, hit by an increase in the number of issued shares.

Sibanye, a spin-off of South Africa's No.2 gold producer Gold Fields, is down 3.07 percent at 28.11 rand.

The company said headline earnings, the primary measure of profit in South Africa, would probably come in a range of 75 and 85 cents per share in the six months ended June, compared with 156 cents a year earlier. - Reuters