Harsbacka mine

Härsbacka mine (Yaren mutanen Sweden: Härsbacka gruva) ma'adanin ma'adini ne da na feldspar. Ya kasance sau ɗaya farkon ma'adinin ma'adini na Sweden. An rufe ma'adinan a shekarar 1946. Ma'adini da feldspar da aka haƙa a Härsbacka sune babban abin da ke cikin babban dyke pegmatite. wannan pegmatite dyke yana tsoma kusan 60 zuwa 70 ° zuwa kudu maso gabas kuma yana da matsakaicin kauri na 37 m. Yayin da ma'adini da feldspar galibi suna gauraye, yankuna masu tsabta na ko dai suna faruwa. Yawancin feldspar ruwan hoda ne microclineperthite kuma mafi ƙarancin adadin farin oligoclase ne. Akwai ƙananan adadin biotite, garnet, molybdenite da fluorite. Kimanin tan 230,000 na quartz an hako su gaba daya daga ma'adinan Härsbacka.

A cikin 1947 Statens Vattenfallverk ne ya sayi ma'adinan don mayar da shi wurin ajiyar mai kuma yana aiki kamar haka har zuwa 1985 lokacin da aka kwashe shi. Tun daga 1997 ma'adinan ya cika cika da ruwan karkashin kasa.[1] A cikin 2021 an ba da aikin binciken Geological Survey na Sweden da bincikar gurɓatattun abubuwa a cikin ma'adinai.

 Bayanan da aka ambata