Black Peacock Mine (Birdlebough Mine; Royal Peacock Black No. 1 & No. 2 lodes), Virgin Valley District, Humboldt Co., Nevada, USA
List of minerals arranged by Strunz 10th Edition classification
|Group 4 - Oxides and Hydroxides|
var: Precious Opal
|4.DA.10||SiO2 · nH2O|
1 entry listed. 1 valid mineral.
U.S. Department of the Interior, Bureau of Land Management, Nevada State Office (Reno), Mining claim, mineral survey, and patent records.
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