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Opal from
A2 Highway tunnel (Falkenberg tunnel), Falkenberg, Kreuzbergl massif, Klagenfurt, Carinthia, Austria

Locality type:Tunnel
Classification
Species:Opal
Formula:SiO2 · nH2O
Confirmation
Validity:Believed Valid
References
References:G. Niedermayr, I. Praetzel: Mineralien Kärntens, 1995
Data
Mineral Data:Click here to view Opal data
Locality Data:Click here to view A2 Highway tunnel (Falkenberg tunnel), Falkenberg, Kreuzbergl massif, Klagenfurt, Carinthia, Austria
Nearest other occurrences of Opal
3.1km (2.0 miles) A2 Highway tunnel, Ehrentaler Berg, Klagenfurt, Carinthia, Austria
45.7km (28.4 miles) Feldspar quarry, Laas, Fresach, Millstatt lake ridge, Carinthia, Austria
51.5km (32.0 miles) Magnesite Mine, Millstätter Alpe, Radenthein, Gurktaler Alpen, Carinthia, Austria
57.3km (35.6 miles) Schwarzenberg quarry, Katsch an der Mur, Murau, Styria, Austria
61.0km (37.9 miles) Spodumene prospect (Brandrücken exploration adit; Weinebene deposit), Brandrücken, Moschkogel - Weinebene area, Koralpe, Carinthia, Austria
66.0km (41.0 miles) Polanz quarry (Mauthnereck), Krumbach, Sankt Oswald ob Eibiswald, Eibiswald, Koralpe, Styria, Austria
66.6km (41.4 miles) Stoffhütte, St Oswald, Deutschlandsberg, Koralpe, Styria, Austria
67.4km (41.9 miles) Müllerbauer, Schwarze Sulm, Schwanberg, Koralpe, Styria, Austria
69.8km (43.3 miles) Schwagbauer (Schwoagbauer), Osterwitz, Deutschlandsberg, Koralpe, Styria, Austria
71.4km (44.3 miles) Rostock creek, Trahütten, Deutschlandsberg, Koralpe, Styria, Austria
 
Mineral and/or Locality  
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