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Amazon Gold Rush Fuels Deforestation and Mercury Poisoning
6 May
Summary
- Illegal mining operations are accelerating deforestation in protected Amazonian conservation zones.
- Mercury contamination from mining is reaching hazardous levels for local communities.
- Record gold prices are driving illegal mining activities despite enforcement efforts.

A surge in global gold prices has triggered an alarming increase in illegal mining across Brazil's Amazon rainforest, leading to accelerated deforestation in protected areas and hazardous mercury contamination. Satellite imagery and ground research reveal extensive clear-cutting within conservation zones such as the Terra do Meio Ecological Station and the Altamira National Forest.
New mining fronts have emerged, with clandestine airstrips detected in biological reserves. While mining represents a smaller portion of overall deforestation compared to agribusiness, its targeting of protected and Indigenous territories makes it particularly destructive. Enforcement operations, though sometimes successful in the short term, are often likened to a 'cat-and-mouse game' as miners relocate or resume operations.
This illegal gold mining is financed by major criminal organizations, with powerful dredges costing millions of reais. The environmental impact extends beyond forest loss, as mercury dumped into rivers contaminates waterways and fish, with studies showing dangerously high levels in fish sold in markets and extreme exposure in young children.
Brazilian authorities have prioritized combating illegal mining on Indigenous lands, recognizing the threat posed by criminal networks. However, the weak mineral export control system facilitates the laundering of illicit gold, giving it a false appearance of legality. The Ministry of Environment is expanding monitoring and supporting enforcement to address these persistent environmental damage issues.