The resource estimate at gold miner Avocet's Inata mine license area in Burkina Faso has been upped by 59% to 3.36m ounces. The figure includes measured, indicated and inferred resources."The growth of the Inata Mineral Resource surpasses our expectations and supports our view that the Inata gold mine is capable of sustaining higher production rates over a longer mine life," said chief executive Brett Richards.Also in Africa, North River Resources, which focuses on southern areas of the continent said it has identified more "high grade intersections from its 100% owned Namib Lead-Zinc Project in Namibia."North River managing director David Steinepreis said: "This further high grade result demonstrates that Namib is shaping up to have considerable potential value for North River, and as such, it remains a core focus of our project portfolio in Southern Africa."Moving to Australia but returning to gold, Solomon Gold said that an additional 18 holes have shown further encouraging high grade gold and silver results from the Kauffmans prospect.Ariana Resources, which mines for gold in Turkey, has pulled another rabbit out of the hat. It has discovered a new buried gold-silver vein system at its Red Rabbit gold project in the west of the country.