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Prase Opal

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About Prase OpalHide

Formula:
SiO2 · nH2O
A variety of Opal

A green opal.

Visit gemdat.org for gemological information about Prase Opal.


Chemical Properties of Prase OpalHide

Formula:
SiO2 · nH2O

Synonyms of Prase OpalHide

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for Prase OpalHide

Localities for Prase OpalHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Czech Republic
 
  • South Bohemian Region
    • České Budějovice District
Duda, Rejl, Slivka: "Mineralien", 1991; Čech, V., Koutek, J.: Geologické a genetické poměry ložisek železné a niklové rudy u Křemže v jižních Čechách. Sborník St. geol. úst. ČSR, 1946, sv. 13,
Czech Republic/Germany/Poland
 
Bauer & Bouska, 1983. Precious & Semi-precious Stones
Kosovo
 
Vik Vanrusselt collection
Poland
 
  • Lower Silesian Voivodeship
    • Ząbkowice Śląskie Co.
http://www.tna.de/strack/pdf/090-09.pdf
Russia
 
  • Orenburg Oblast
    • Svetlyi
      • Buruktal District
Mikhailov, B.M. (2000): Lithology and Mineral Resources 35(4), 351-364.
Tanzania
Gübelin, E. and Wolgensinger, M. (1976) Edelstenen. Uitgeverij Artis, Brussel (in Dutch).
  • Dodoma Region
Gübelin, E., Wolgensinger, M. (1976) Edelstenen. Uitgeverij Artis, Brussel (in Dutch).; Caucia, Franca, Marinoni, Luigi, Ghisoli, Christian, Alberto, Leone (2016) Gemological, physical and chemical properties of prase opals from Hanety Hill (Tanzania). Periodico di Mineralogia, 85, 41-50.
USA
 
  • California
    • Napa Co.
      • Knoxville Mining District
Rocks&Min 11(8):117
 
Mineral and/or Locality  
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