Vote for your favorite mineral in #MinCup26! - Hafnon vs. Putnisite
It's a pair of tiny minerals of unusual chemistry as orange Hafnon battles with purple Putnisite.
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Biotite from
Källfall Mine, Riddarhyttan, Skinnskatteberg, Västmanland County, Sweden


Locality type:Mine
Classification
Species:'Biotite' (not an IMA approved species)
Formula:K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Källfall Mine, Riddarhyttan, Skinnskatteberg, Västmanland County, Sweden
Data Identifiers
Mindat Occurrence Record ID:1655952
Long-form Identifier:1:3:1655952:5
GUID (UUID V4):0
Nearest other occurrences of Biotite
1.7km (1.1 miles) ⓘHans Urbansson mine field, Riddarhyttan, Skinnskatteberg, Västmanland County, Sweden
4.0km (2.5 miles) ⓘGamla Bastnäs deposit, Bastnäs Mines, Riddarhyttan, Skinnskatteberg, Västmanland County, Sweden
4.8km (3.0 miles) ⓘStålklockan mine, Riddarhyttan, Skinnskatteberg, Västmanland County, Sweden
19.9km (12.4 miles) ⓘStråssa ore field, Stråssa, Lindesberg, Örebro County, Sweden
20.4km (12.7 miles) ⓘBlanka ore field, Stråssa, Lindesberg, Örebro County, Sweden
21.4km (13.3 miles) ⓘHåkansboda, Stråssa, Lindesberg, Örebro County, Sweden
22.8km (14.2 miles) ⓘLovisagruvan (Lovisa Mine), Stråssa, Lindesberg, Örebro County, Sweden
27.3km (17.0 miles) ⓘStripa ore field, Storå, Lindesberg, Örebro County, Sweden
31.3km (19.5 miles) ⓘSlöjdartorp, Nyberget ore field, Nyberget, Lindesberg, Örebro County, Sweden
31.5km (19.6 miles) ⓘMangruvan, Nyberget ore field, Nyberget, Lindesberg, Örebro County, Sweden
References
Andersson, Stefan S.; Jonsson, Erik; Sadeghi, Martiya (2024) A synthesis of the REE-Fe-polymetallic mineral system of the REE-line, Bergslagen, Sweden: New mineralogical and textural-paragenetic constraints. Ore Geology Reviews, 174. 106275 doi:10.1016/j.oregeorev.2024.106275
 
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