According to Tegengren (1924) the mines where in production in 17th century. Other sources claim that they where mined already in the 14th. During exploration work in the -80ies selected sampling in the waste dumps gave 1,92 %Cu and 9,6 ppm Au. One sample from a ditch gave 1,37 % Zn.
In all there are 13 mines along a 350 stretch- to mention a few; Höggruvan, Nygruvan, Försöket, Grängsbo gruva, Forngruvan, Bångagruvan.
References
Malmer, industriella mineral och bergarter i Gävleborgs län. SGU rapp130 (2009)
Mineral List
6 entries listed. 6 valid minerals.
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