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 gneiss from
Nordre Bjellåsen (Bjellåsen 5), Bjellåsen, Froland, Agder, Norway


Locality type:Quarry
Classification
Type:Biotite gneiss
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Biotite gneiss data
Locality Data:Click here to view Nordre Bjellåsen (Bjellåsen 5), Bjellåsen, Froland, Agder, Norway
Data Identifiers
Mindat Occurrence Record ID:1388096
Long-form Identifier:1:3:1388096:5
GUID (UUID V4):0
Nearest other occurrences of Biotite gneiss
4.6km (2.8 miles) ⓘØygarden (Kleivmyr 12), Kleivmyr, Froland, Agder, Norway
4.7km (2.9 miles) ⓘTjørnene (Kleivmyr 11), Kleivmyr, Froland, Agder, Norway
41.3km (25.7 miles) ⓘEkorndalen Adit, Risør, Agder, Norway
References
Ihlen P.M., Henderson I., Larsen, R.B., Lynum R. (2001): Potensielle ressurser av kvarts- og feltspatråstoffer på Sørlandet, I: Regional prøvetakning av utvalgte feltspatbrudd i Frolandsområdet. NGU Rapport 2001.044, 46 pp.
 
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