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Opal from
Graphite deposit, Hengstberg, Hafnerbach, Mostviertel, Lower Austria, Austria

Locality type:Deposit
Classification
Species:Opal
Formula:SiO2 · nH2O
Confirmation
Validity:Believed Valid
References
References:Kolitsch, U., Löffler, E., Schillhammer, H. & Knobloch, G. (2015): 1944) Allophan, Almandin, Apatit, Calcit, Diopsid, dravitischer Turmalin, Felsőbányait, Gips, Halotrichit, Jarosit(?), Klinozoisit, Melanterit, Mikroklin, Natrojarosit, Opal, Prehnit, Rutil, Sillimanit, Skapolith, Titanit, Tremolit, V-haltiger Muskovit(?) und Zirkon vom ehemaligen Graphitbergbau Hengstberg bei Hafnerbach im Mostviertel, Niederösterreich. Pp. 254-257 in Niedermayr, G. et al. (2015): Neue Mineralfunde aus Österreich LXIV. Carinthia II, 205./125., 207-280.
Data
Mineral Data:Click here to view Opal data
Locality Data:Click here to view Graphite deposit, Hengstberg, Hafnerbach, Mostviertel, Lower Austria, Austria
Nearest other occurrences of Opal
9.0km (5.6 miles) Obermamau, Karlstetten, Mostviertel, Lower Austria, Austria
9.2km (5.7 miles) Seebichl, Zintring, Maria Laach am Jauerling, Waldviertel, Lower Austria, Austria
17.8km (11.0 miles) Road cut, marble quarry (Thalinger quarry; Hausbruch), Amstall, Mühldorf, Waldviertel, Lower Austria, Austria
17.9km (11.1 miles) Marble quarry (Thalinger quarry; Hausbruch), Amstall, Mühldorf, Waldviertel, Lower Austria, Austria
18.1km (11.2 miles) Trandorf, Mühldorf, Waldviertel, Lower Austria, Austria
19.5km (12.1 miles) Graphite quarry, Amstall, Mühldorf, Waldviertel, Lower Austria, Austria
32.0km (19.9 miles) "In der Gleisen" quarry (Yspertal; Ispertal; Unterfell), St Oswald, Waldviertel, Lower Austria, Austria
40.8km (25.4 miles) Kyanite occurrence, Tiefenbach, Krumau am Kamp, Waldviertel, Lower Austria, Austria
47.2km (29.3 miles) Diatomite pit, Parisdorf, Ravelsbach, Weinviertel, Lower Austria, Austria
47.8km (29.7 miles) Marble quarries (incl. Renz Quarry; Bundesheer Quarry), Winkl, Röhrenbach, Waldviertel, Lower Austria, Austria
 
Mineral and/or Locality  
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