Colombia currently only requires environmental permissions for projects in the exploitation and production phases.

The Portfolio consists of 22 royalties on the production of minerals from mines in North America, South America, Australia and Africa.

Production has lagged demand, and supply chain issues have further disrupted production.

US green metals push needs a revamp of gold-rush mining law.

European stocks and US futures declined on Thursday, coming under pressure from the increasingly tight outlook for monetary policy and a lockdown in China.

In a snapshot of the world's gold supply, Miningintelligence data provides a ranking of the largest gold producers.

Uganda introduced the levy -- as well as a 10% tax on unprocessed gold -- on July 1 last year to boost revenue from the metal.