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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Chalcedony from
Oswaldiberg tunnel (A10 Highway tunnel), Oswaldiberg, Villach, Carinthia, Austria


Locality type:Tunnel
Classification
Species:Quartz var: Chalcedony
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chalcedony data
Locality Data:Click here to view Oswaldiberg tunnel (A10 Highway tunnel), Oswaldiberg, Villach, Carinthia, Austria
Data Identifiers
Mindat Occurrence Record ID:910343
Long-form Identifier:1:3:910343:6
GUID (UUID V4):0
Nearest other occurrences of Chalcedony
15.9km (9.9 miles) ⓘRupa, Nötsch im Gailtal, Villach-Land District, Carinthia, Austria
31.3km (19.5 miles) ⓘA2 Highway tunnel (Falkenberg tunnel), Wölfnitz, Klagenfurt am Wörthersee, Carinthia, Austria
37.3km (23.2 miles) ⓘSchaumboden, Frauenstein, Sankt Veit an der Glan District, Carinthia, Austria
37.6km (23.4 miles) ⓘMagnetite deposit, Sonntagsberg, Frauenstein, Sankt Veit an der Glan District, Carinthia, Austria
41.8km (25.9 miles) ⓘZietnerkogel, Zwein, Kraig, Frauenstein, Sankt Veit an der Glan District, Carinthia, Austria
41.8km (26.0 miles) ⓘZeiselberg forestry road cut, Magdalensberg, Klagenfurt-Land District, Carinthia, Austria
52.9km (32.9 miles) ⓘSerpentinite quarry, Griesserhof (Gulitzen; Gullitzen), Hirt, Micheldorf, Sankt Veit an der Glan District, Carinthia, Austria
55.5km (34.5 miles) ⓘMarble quarry (Bürgergilt quarry; Bürgergilde quarry), Olsa, Friesach, Sankt Veit an der Glan District, Carinthia, Austria
55.6km (34.6 miles) ⓘTerpetzen, Trixen, Völkermarkt, Völkermarkt District, Carinthia, Austria
60.2km (37.4 miles) ⓘBodenmoosgraben talc mine, Lessach, Tamsweg District, Salzburg, Austria
References
Hiden (1997)
 
and/or  
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