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Tephroite from
Sjögruvan, Grythyttan, Hällefors, Örebro County, Sweden

Classification
Species:Tephroite
Formula:Mn22+SiO4
Confirmation
Validity:Believed Valid
References
References:Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 857, 1025, 1030.; Holtstam, D. (2001): W and V mineralization in Långban-type Fe-Mn deposits: Epigenetic or Syngenetic? Geologiske Föreningen i Stockholm Förhandlingar 123: 29-33; Moore, P. B. (1967). Welinite, a new mineral from LAngban. Arkiv fOr Mineralogi och Geologi, 4, 407-411.
Associated Minerals:
Associates:Chondrostibian
Magnetostibian
Associated Minerals Based on Photo Data:
Ingersonite3 photos of Tephroite associated with Ingersonite at this locality.
Baryte1 photo of Tephroite associated with Baryte at this locality.
Calcite1 photo of Tephroite associated with Calcite at this locality.
Data
Mineral Data:Click here to view Tephroite data
Locality Data:Click here to view Sjögruvan, Grythyttan, Hällefors, Örebro County, Sweden
Nearest other occurrences of Tephroite
20.8km (12.9 miles) Stora Pajsberg Mine, Pajsberg, Persberg ore district, Filipstad, Värmland County, Sweden
21.0km (13.0 miles) Harstigen Mine, Pajsberg, Persberg ore district, Filipstad, Värmland County, Sweden
28.4km (17.6 miles) Långban, Filipstad, Värmland County, Sweden
32.6km (20.3 miles) Kitteln Mine, Nordmark Odal Field (Nordmarksberg), Filipstad, Värmland County, Sweden
32.7km (20.3 miles) Brattfors Mine, Nordmark Odal Field (Nordmarksberg), Filipstad, Värmland County, Sweden
33.2km (20.6 miles) Jakobsberg Mine, Jakobsberg ore field, Nordmark district, Filipstad, Värmland County, Sweden
63.2km (39.3 miles) Hillängs Mine, Ludvika, Dalarna County, Sweden
 
Mineral and/or Locality  
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