Africa's top gold producer AngloGold Ashanti said on Wednesday that it would not look for a new joint venture partner for its Obuasi mine in Ghana until it had an investment agreement with the government.

Randgold Resources in December pulled out of a joint venture with AngloGold to redevelop Obuasi, a decision that could spell closure for one of Ghana's most important mines.

"With regards to Obuasi, we are now firmly of the view that we must now progress our discussion with the Ghanian government to obtain all regulatory approvals which are necessary to conclude a satisfactory investment agreement," AngloGold chief executive Srinivasan Venkatakrishnan, who goes by the name Venkat, told the Investing in African Mining conference.

"Only then we will we restart the search for a joint venture partner," Venkat said.