Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Columbite-(Fe) from
Tangen Feldspar Mine, Kragerø, Telemark, Norway


Locality type:Mine
Classification
Species:Columbite-(Fe)
Formula:Fe2+Nb2O6
Age information
Maximum recorded age:1082.3 ± 4.5 Ma
Minimum recorded age:1082.3 ± 4.5 Ma
Sample ages:
Recorded ageGeologic TimeSampleDating method
11082.3 ± 4.5 MaStenianNHM Oslo 17164Pb-U
Sample references:
1NHM Oslo 17164
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Columbite-(Fe) data
Locality Data:Click here to view Tangen Feldspar Mine, Kragerø, Telemark, Norway
Photo GalleryView Gallery (5 photos)
Data Identifiers
Mindat Occurrence Record ID:688703
Long-form Identifier:1:3:688703:2
GUID (UUID V4):0
Nearest other occurrences of Columbite-(Fe)
17.8km (11.1 miles) Ramskjær Feldspar Quarry, Søndeled, Risør, Agder, Norway
49.0km (30.5 miles) Håkestad Quarry, Håkestad, Tjølling, Larvik Commune, Vestfold, Norway
90.7km (56.3 miles) Eptevatnet 04 Feldspar Quarry (Hovåsen), Iveland, Agder, Norway
91.5km (56.9 miles) Landsverk, Evje og Hornnes, Agder, Norway
91.6km (56.9 miles) Landsverk 1 Feldspar Quarry (Jokeli), Landsverk, Evje og Hornnes, Agder, Norway
92.0km (57.2 miles) Fossbekk Feldspar Quarry, Iveland, Agder, Norway
92.2km (57.3 miles) Ljosland 03 Feldspar Quarry, Ljosland, Iveland, Agder, Norway
92.2km (57.3 miles) Ljosland, Iveland, Agder, Norway
92.3km (57.3 miles) Håverstad, Iveland, Agder, Norway
92.3km (57.3 miles) Frikstad 07 Feldspar Quarry, Frikstad, Iveland, Agder, Norway
References
 
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