New report shows private funds raising money for investment in metals and mining came up empty in Q3 and so far this year commitments total a paltry $100m.
Local and international companies are being lured by the area's untouched gold riches, but groups warn of potential impacts to watersheds and communities.
After freezing out Rio Tinto for more than a decade for owning a highly polluting copper mine, one of the world’s biggest sovereign wealth funds has brought the company back into the fold.
Miners, which often use fossil fuels as the energy source in their operations, are shifting to renewable generation as the cost of wind and solar power drops.
Unionized miners will hold a day-long strike on Tuesday in a show of solidarity with ongoing protests over the high cost of living and extreme inequality in the country.