While rising interest rates bring macroeconomic headwinds for equity valuations, gold has had a special relationship with interest rates in recent hikes.
The document, which has yet to be approved by Congress, will see First Quantum pay $375 million a year plus a royalty of 12% to 16% of the mine's gross profits.
This graphic by Visual Capitalist breaks down the catalysts that unlock compounding value for royalty holders, and how precious metals royalties outperform other income investments.
The bank for decades held more than 300 tonnes equivalent of gold, but between 2015 and 2017 the government began using the precious metal as a collateral for loans with international banks.