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Tourmaline from
Spro pegmatite, Nesodden, Akershus, Norway

Locality type:Pegmatite
Classification
Species:'Tourmaline' (not an IMA approved species)
Formula:A(D3)G6(Si6O18)(BO3)3X3Z
Colour:black to blue in fragments
Abundance at site:Common
Confirmation
Validity:Believed Valid
References
References:Raade,G. (1965): The minerals of the granite pegmatite at Spro, Nesodden, near Oslo. Norges Geologiske Undersøkelse 234 [Årbok 1964], 160-166
Data
Mineral Data:Click here to view Tourmaline data
Locality Data:Click here to view Spro pegmatite, Nesodden, Akershus, Norway
Nearest other occurrences of Tourmaline
11.7km (7.3 miles) Vardåsen Tunnel, Asker, Akershus, Norway
15.8km (9.8 miles) Øvre Lahell Quarry, Lier, Buskerud, Norway
22.4km (13.9 miles) Øksne Quarry, Lier, Buskerud, Norway
29.1km (18.1 miles) Nikkerud Mines, Nedre Eiker, Buskerud, Norway
29.8km (18.5 miles) Ryggkollen, Nedre Eiker, Buskerud, Norway
29.9km (18.6 miles) Solbergmoen, Nedre Eiker, Buskerud, Norway
30.4km (18.9 miles) Batteriet, Nedre Eiker Church, Nedre Eiker, Buskerud, Norway
42.1km (26.1 miles) Sætersberg (Sätersberg), Modum, Buskerud, Norway
42.6km (26.5 miles) Bakstevalåsen, Gunhildrud, Øvre Eiker, Buskerud, Norway
51.6km (32.1 miles) Øvre Dypingdal Mine, Dypingdal serpentine-magnesite deposit, Snarum, Modum, Buskerud, Norway
 
Mineral and/or Locality  
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