Brazil's largest gold refiner delisted from major exchange amid ongoing Amazon mining probe.
One of Brazil's largest gold refiners, which is suspected of processing gold mined illegally in the Amazon rainforest, has caused environmental damage in the region.
Sao Paulo-based Marsam was sharing ownership links and processes gold on behalf of an intermediary that Brazilian prosecutors have accused of buying gold.
Dirceu Frederico Sobrinho, a former partner at Marsam, has been reaping the benefits of the recent gold rush in the Amazon.
Last year, federal prosecutors filed a civil suit against the company, F.D'Gold, and two other companies that purchase gold.
Marsam was quietly removed from the Responsible Minerals Initiative's public list of smelters and refiners that follow best sourcing practices this month, due to the ongoing lawsuit.