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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
Opal	4.DA.10	SiO₂ · nH₂O
var: Black Opal	4.DA.10	SiO₂ · nH₂O
var: Precious Fire Opal	4.DA.10	SiO₂ · nH₂O
var: Precious Opal	4.DA.10	SiO₂ · nH₂O
var: Wood Opal	4.DA.10	SiO₂ · 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.

External Links

http://www.royalpeacock.com/

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Copyright © Jolyon Ralph and Ida Chau 1993-2012. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
Current server date and time: 19th Apr 2012 03:44:25