Cyanide-laced waste ponds from illegal gold mining are contaminating waterways near Indigenous territory in the Amazon, according to reporting by Mongabay.

"Cyanide ponds from illegal mining threaten Amazon Indigenous territory" — Mongabay · Humanitarian & Biosphere

3 Nov 2026Single source

What it means

Illegal gold miners in the Brazilian Amazon, specifically in the state of Roraima, are using cyanide to extract gold from ore and discarding the toxic waste in unlined ponds. These cyanide-laced ponds are leaking into waterways that flow through or near Indigenous territories, posing severe health and environmental risks to the local communities and ecosystems.

Accuracy & sourcesGrounded

The claim is based on a new investigative report by Mongabay, a reputable environmental news outlet known for on-the-ground reporting. However, because the highlight does not cite a primary source (such as a scientific study or government data), and we cannot independently verify the specific details without reading the full article, the solidity of the claim rests on Mongabay's credibility rather than a directly referenced primary document.

How new

Genuinely new: this story was published by Mongabay on 2 November 2026, reporting on current conditions in Roraima.

Cyanide-laced waste ponds from illegal gold mining are contaminating waterways near Indigenous territory in the Amazon, according to reporting by Mongabay.

What it means

Accuracy & sourcesGrounded

How new

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