The Pyhäjärvi mine is an underground mine located in Pyhäjärvi, North Ostrobothnia. It is owned by Canadian First Quantum Minerals Ltd. Ore produced by the Pyhäjärvi mine is excavated at the depth of 1,050 to 1,410 m in the bedrock. The ore contains approximately 3% chalcopyrite (CuFeS2), 4% zinc blend (ZnS) and 66% pyrite (FeS2). Approximately 1.4 tonnes of ore is excavated and processed on an annual basis.
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