Toxic mud that swamped many Brazilian towns when a dam collapsed earlier this month has devastated forests more than a big location, stated Atmosphere Minister Izabella Teixeira.
Red sludge burst out following a dam employed to hold waste water from iron production collapsed.
At least eight individuals had been killed and 11 are missing, presumed dead.
Environmental agency Ibama has fined the iron ore mine owners, Samarco, over Brazil’s “worst mining accident”.
“Ibama has created a preliminary assessment of the damage,” mentioned Ms Teixeira.
“But we will prepare a detailed study, comparing satellite pictures from before and right after the breach,” she told O Globo newspaper.
The initial assessment shows that an region of at least 9 sq km (900 hectares) of natural vegetation was destroyed in the south-eastern state of Minas Gerais, exactly where the burst dam was.
A full study will be carried out by Ibama after the Brazilian rainy season is more than, at the finish of the 2016 summer, Ms Teixeira explained.
The village closes to the dam, Bento Rodrigues, was completely destroyed by the five November dam breach.
About 600 folks who lived there have been in temporary accommodation because the accident.
Residents mentioned there was no warning. They had to run for their lives as they realised the Fundao dam had collapsed.
The mud has triggered destruction along the path of the River Doce, which meets the Atlantic Ocean in the state of Espirito Santo, some 500km (310 miles) away from the location exactly where the dam collapsed.
Two dams threatened
Samarco has attempted to safeguard plants and animals by creating barriers along the banks of the river.
The organization agreed last week to spend the Brazilian government 1bn reais (£170m $ 260m) in compensation.
The funds will be employed to cover the initial clean-up and to provide some compensation to the victims and their households.
Samarco is owned by mining giants Vale, from Brazil, and Anglo-Australian firm BHP Billiton.
The business said final week that two other dams close to the disaster region have been at threat of collapsing.
Emergency perform to avoid another disaster will be carried out for the next 3 months.