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Opal from Humboldt Co., Nevada, USA

USA
 
  • Nevada
    • Humboldt Co.
      • Awakening District
Econ Geol (1994) 89:628-638; USGS Bull 2090
      • Donnelly District
[var: Precious Opal] NBMG Spec. Pub. 31 Minerals of Nevada
[var: Precious Opal] NBMG Spec. Pub. 31 Minerals of Nevada
[var: Precious Opal] NBMG Spec. Pub. 31 Minerals of Nevada
      • National District
Econ Geol (1985) 80:360-393
      • Opalite District
NBMG Bull 59 Geology and Mineral Resources of Humboldt County, Nevada
      • Osgood Mts
        • Potosi District
Min Rec 10:4 pp219-221
      • Rabbit Hole (Sulfur; Sulphur) District
Adams, George I. The Rabbit Hole Sulphur Mines Near Humboldt House, Nev. In: Contributions to Economic Geology 1903 United States Geological Survey Bulletin 225 Government Printing Office, Washington DC 1904
Adams, George I. The Rabbit Hole Sulphur Mines Near Humboldt House, Nev. In: Contributions to Economic Geology 1903 United States Geological Survey Bulletin 225 Government Printing Office, Washington DC 1904
      • Santa Rosa Range
[var: Precious Opal] NBMG Spec. Pub. 31 Minerals of Nevada
      • Sulphur District
        • Sulphur
Econ Geol (1997) 92:578-600
NBMG Spec. Pub. 31 Minerals of Nevada
NBMG files No. 50600003; Nevada Bureau of Mines and Geology NBMG Open-File Report 96-3 By Stephen B. Castor, Christopher D. Henry, Lisa A. Shevenell
USGS Bull 1538D
[var: Precious Opal] NBMG Spec. Pub. 31 Minerals of Nevada; USGS Bull 1538D
[var: Precious Opal] Christopher Wentzell
[var: Precious Opal] Eckert, Allen W. (1997) The World of Opals. (John Wiley & Sons, New York). p. 312,310.
[var: Precious Opal] Rocks & Min.:13:56.; USGS Bull 1538D
[var: Precious Opal] Christopher Wentzell collection.
[var: Precious Opal] USGS Bull 1538D
[var: Precious Opal] Christopher Wentzell
[var: Wood Opal] NBMG Spec. Pub. 31 Minerals of Nevada
[var: Jelly Opal] NBMG Spec. Pub. 31 Minerals of Nevada; Extra Lapis - English No. 10 Opal
[var: Precious Opal] USGS Bull 1538D
[var: Precious Opal] Rocks & Min.: 8:16; 19:13.; USGS Bull 1538D
USGS Bull 1538D
[var: Precious Opal] NBMG Spec. Pub. 31 Minerals of Nevada
[var: Precious Opal] Christopher Wentzell;
NBMG Spec Pub 31 Minerals of Nevada
        • WRT Stonetree group
Christopher Wentzell collection.
Sinkankas, John (1959) Gemstones of North America. Figure 30 at page 116.
[var: Precious Opal] Christopher N. Wentzell



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