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Royal Peacock Group Mines, Virgin Valley District, Humboldt Co., Nevada, USA

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List of minerals arranged by Strunz 10th Edition classification
Group 4 - Oxides and Hydroxides
Opal4.DA.10SiO2 · nH2O
var: Black Opal4.DA.10SiO2 · nH2O
var: Precious Fire Opal4.DA.10SiO2 · nH2O
var: Precious Opal4.DA.10SiO2 · nH2O
var: Wood Opal4.DA.10SiO2 · nH2O
Unclassified Minerals
'Petrified Wood'-


6 entries listed. 5 valid minerals.

References

Eckert, Allan W. (1997) The World of Opals. (Wiley & Sons, New York); pages 310-11.


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