Härsbacka mine (Swedish: Härsbacka gruva) is a quartz and feldspar mine. It was once Sweden's foremost quartz mine.[2] The mine was closed in 1946.[1][2] The quartz and feldspar mined in Härsbacka are the main constituent of a large pegmatitedyke.[2] This pegmatite dyke dips about 60 to 70° to the southeast and has a maximum thickness of 37 m.[2] While quartz and feldspar are mostly mixed, pure zones of either occur.[2] Most feldspar is pink microclineperthite and much lesser amounts are white oligoclase.[2] There are lesser quantities of biotite, garnet, molybdenite and fluorite.[2] About 230,000 tons of quartz have been mined in total from Härsbacka mine.[2]
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.[2] Since 1997 the mine is fully flooded by groundwater.[1] In 2021 the Geological Survey of Sweden was tasked with investigating contaminants in the mine.[1]
Referencesedit
^ abcde"Härsbackagruvan". SGU (in Swedish). 2021-11-02. Retrieved 2022-07-23.
^ abcdefghiLundegårdh, Per H. (1971). Nyttosten i Sverige (in Swedish). Stockholm: Almqvist & Wiksell. p. 19.
April 12, 2024
härsbacka, mine, swedish, härsbacka, gruva, quartz, feldspar, mine, once, sweden, foremost, quartz, mine, mine, closed, 1946, quartz, feldspar, mined, härsbacka, main, constituent, large, pegmatite, dyke, this, pegmatite, dyke, dips, about, southeast, maximum,. Harsbacka mine Swedish Harsbacka gruva is a quartz and feldspar mine It was once Sweden s foremost quartz mine 2 The mine was closed in 1946 1 2 The quartz and feldspar mined in Harsbacka are the main constituent of a large pegmatite dyke 2 This pegmatite dyke dips about 60 to 70 to the southeast and has a maximum thickness of 37 m 2 While quartz and feldspar are mostly mixed pure zones of either occur 2 Most feldspar is pink microclineperthite and much lesser amounts are white oligoclase 2 There are lesser quantities of biotite garnet molybdenite and fluorite 2 About 230 000 tons of quartz have been mined in total from Harsbacka mine 2 Harsbacka mineLocationHarsbacka mineLocation in SwedenMunicipalityOsterakerCountrySwedenCoordinates59 28 49 43 N 18 23 18 78 E 59 4803972 N 18 3885500 E 59 4803972 18 3885500ProductionProductsQuartz feldsparHistoryOpened1895 1 Closed1946 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 2 Since 1997 the mine is fully flooded by groundwater 1 In 2021 the Geological Survey of Sweden was tasked with investigating contaminants in the mine 1 References edit a b c d e Harsbackagruvan SGU in Swedish 2021 11 02 Retrieved 2022 07 23 a b c d e f g h i Lundegardh Per H 1971 Nyttosten i Sverige in Swedish Stockholm Almqvist amp Wiksell p 19 Retrieved from https en wikipedia org w index php title Harsbacka mine amp oldid 1165002257, wikipedia, wiki, book, books, library,
