The Indian government has announced a new royalty payment scheme for a list of critical minerals in a bid to motivate miners to ramp up local production. Under the new scheme, miners of graphite would pay royalties as a percentage of the sales price of the mineral rather than a fixed rate as the previous royalty regime prescribed, Bloomberg reported, citing data from the Indian Bureau of Mines. The authority also set royalty rates for caesium, zirconium, and rubidium. Previously, there were no royalty rates specified for these elements. The purpose…