Английская Википедия:Härsbacka mine
Шаблон:Infobox mine Härsbacka mine (Шаблон:Lang-sv) is a quartz and feldspar mine. It was once Sweden's foremost quartz mine.[1] The mine was closed in 1946.[2][1] The quartz and feldspar mined in Härsbacka are the main constituent of a large pegmatite dyke.[1] This pegmatite dyke dips about 60 to 70° to the southeast and has a maximum thickness of 37 m.[1] While quartz and feldspar are mostly mixed, pure zones of either occur.[1] Most feldspar is pink microclineperthite and much lesser amounts are white oligoclase.[1] There are lesser quantities of biotite, garnet, molybdenite and fluorite.[1] About 230,000 tons of quartz have been mined in total from Härsbacka mine.[1]
In 1947 the mine was bought by Statens Vattenfallverk to turn it into an oil storage depot and it functioned as such until 1985 when it was emptied.[1] Since 1997 the mine is fully flooded by groundwater.[2] In 2021 the Geological Survey of Sweden was tasked with investigating contaminants in the mine.[2]
References
- Английская Википедия
- 1895 establishments in Sweden
- 1946 disestablishments in Sweden
- Feldspar mines in Sweden
- Underground mines in Sweden
- Quartz mines in Sweden
- Österåker Municipality
- Former mines in Sweden
- Environmental issues in Sweden
- Pegmatite mines
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