Ghana is delaying the sale of $750-million of shares in a gold mining fund as the government reviews the rules and processes that dictate mineral royalty payments, according to people familiar with the matter. The West African nation initially prepared to hold the public offering this month, but has postponed the plan until March, said the people, who asked not to be identified because they’re not authorized to speak publicly about the matter. The fund will be structured to receive royalties and pay dividends from these inflows, prompting the government to reassess whether its systems are sufficiently robust to secure all income due, they said.