Copper from Västerbotten Province, Sweden
Sweden | |
| Mäki, T. (1997). Volcanic hosted massive sulphide and gold deposits in the Skellefte district, Sweden and western Finland. Geological Survey of Finland. Grensman, Fredrik (1989) Björkdalsgruvan. NAGS-NYTT, 16 (2) 15 |
T. Wikström, thesis from Stockholm University |