High Cu, Fe, Ni, Zn, S, and ash contents in peat were gauged at black schist area.
210">Bedrock and soil composition affect the characteristics of peat formations.
Besides groundwater chemistry, acid rock drainage influenced the peat chemistry.
Peat naturally attenuates groundwater and surface waters in pre-mining conditions.
The capacity of peat to attenuate AMD can be decreased before mining activities begin.