(Kobergs zinkgruva, Gåsgruvefältet)
The deposit was discovered in 1643 where it was first worked for silver from Ag-bearing galena in the early 1700:s, and later tried in 1890:s and 1915 for zinc ore.
Ref.: Mineralogical Magazine (1992) 56, 17-35.
http://www.minersoc.org/pages/Archive-MM/Volume_56/56-382-27.pdf
Geologiska Föreningens i Stockholm Förhandlingar, Stockholm: 5, 667.
