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Opal from Antler Foreland Basin, North America Plate

07617720014968727819599.jpg
Opal-AN, etc.

80 foot level, Gold Hill Mine, Gold Hill, Gold Hill Mining District, Tooele County, Utah, USA
08137140014968727816914.jpg
Opal-AN, etc.

80 foot level, Gold Hill Mine, Gold Hill, Gold Hill Mining District, Tooele County, Utah, USA
00248980015428689688864.jpg
Opal, etc.

Gold Hill Mine, Gold Hill, Gold Hill Mining District, Tooele County, Utah, USA
06776780014950095028625.jpg
Opal-AN

Spokane, Spokane County, Washington, USA
01383200014964634417948.jpg
Opal-AN, etc.

80 foot level, Gold Hill Mine, Gold Hill, Gold Hill Mining District, Tooele County, Utah, USA
07851100014964634414069.jpg
Opal-AN, etc.

80 foot level, Gold Hill Mine, Gold Hill, Gold Hill Mining District, Tooele County, Utah, USA
04453540015604095965845.jpg
Opal, etc.

Gold Hill Mine, Gold Hill, Gold Hill Mining District, Tooele County, Utah, USA
06776780014950095028625.jpg
Opal-AN

Spokane, Spokane County, Washington, USA
07617720014968727819599.jpg
Opal-AN, etc.

80 foot level, Gold Hill Mine, Gold Hill, Gold Hill Mining District, Tooele County, Utah, USA
08137140014968727816914.jpg
Opal-AN, etc.

80 foot level, Gold Hill Mine, Gold Hill, Gold Hill Mining District, Tooele County, Utah, USA
00248980015428689688864.jpg
Opal, etc.

Gold Hill Mine, Gold Hill, Gold Hill Mining District, Tooele County, Utah, USA
07304940014947247358628.jpg
Opal-AN

Spokane, Spokane County, Washington, USA
USA
 
  • California
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 282
      • Coso Hot Springs
        • Coso Hot Springs deposit
[Opal-A var. Opal-AN] Collection of RJ Martin
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
      • Darwin Hills
        • Darwin Mining District
          • Darwin
[Opal-A var. Opal-AN] Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.
Van Nostrand Reinholt Press: 355.
Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.
Troxel, Bennie Wyatt, Stinson, M.C., and Chesterman, C.W. (1957) Uranium. California Division of Mines Bulletin 176: 672-674
Van Nostrand Reinholt Press: 355.
      • Saline Valley
        • Badwater Springs
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
      • Sugarloaf Mountain
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 162.
Rogers, Austin Flint (1922), A new occurrence of cristobalite in California: Journal of Geology: 30: 211-216
Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.
    • Los Angeles County
Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.
Fleischer, P. (1972) Sepiolite associated with Miocene diatomite, Santa Cruz basin, California. American Mineralogist: 57: 903-913
Van Nostrand Reinholt Press: 441
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 282
      • Dumtah
Walstrom, Robert E. (n.d.) Personal communication.
      • Ivanhoe
        • Venice Hills
D. B. Sterrett (1912) Mineral Resources of the United States Calendar Year 1911. US Government Printing Office.
  • Idaho
    • Custer County
      • Bay Horse Mining District
        • Challis
[Opal-A var. Opal-AN] John Cornish collection
Ream, Lanny R. (2004) Idaho Minerals (2nd ed.) L. R. Ream Publishing, Coeur d'Alene, ID.
    • Kootenai County
Dake, H. C. (1956) Northwest Gem Trails - A Field Guide for the Gem Hunter, Mineral Collector and Tourist (2nd ed.) Gembooks.
    • Latah County
Dake, H. C. (1956) Northwest Gem Trails - A Field Guide for the Gem Hunter, Mineral Collector and Tourist (2nd ed.) Gembooks.
The Moscow Opal Mines 1890 to 1893 (The First Commercial Opal Mines in the United States), Ron Brockett, 1975
Dake, H. C. (1956) Northwest Gem Trails - A Field Guide for the Gem Hunter, Mineral Collector and Tourist (2nd ed.) Gembooks.
    • Lemhi County
      • Blackbird Mining District
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Christopher Wentzell collection (2020) and personally verified on site (2020)
WC van Laer, 2009
Dake, H. C. (1956) Northwest Gem Trails - A Field Guide for the Gem Hunter, Mineral Collector and Tourist (2nd ed.) Gembooks.
    • Lincoln County
Dake, H. C. (1956) Northwest Gem Trails - A Field Guide for the Gem Hunter, Mineral Collector and Tourist (2nd ed.) Gembooks.
    • Twin Falls County
      • Buhl Area
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
    • Valley County
      • Big Creek Mining District
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
      • Marble Creek Mining District
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
      • Monumental Creek Mining District
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
  • Nevada
    • Elko County
      • Coal Mine Mining District
LaPointe, Daphne D., Tingley, Joseph V., Jones, Richard B. (199) Mineral resources of Elko County, Nevada. Bulletin 106. Nevada Bureau of Mines
      • Contact Mining District
LaPointe, Daphne D., Tingley, Joseph V., Jones, Richard B. (199) Mineral resources of Elko County, Nevada. Bulletin 106. Nevada Bureau of Mines
      • Delano Mining District
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
LaPointe, Daphne D., Tingley, Joseph V., Jones, Richard B. (199) Mineral resources of Elko County, Nevada. Bulletin 106. Nevada Bureau of Mines
LaPointe, Daphne D., Tingley, Joseph V., Jones, Richard B. (199) Mineral resources of Elko County, Nevada. Bulletin 106. Nevada Bureau of Mines
LaPointe, Daphne D., Tingley, Joseph V., Jones, Richard B. (199) Mineral resources of Elko County, Nevada. Bulletin 106. Nevada Bureau of Mines
      • Ferber Mining District
Castor, Stephen B., Ferdock, Gregory C. (2004) Minerals of Nevada. Special Publication 31. Nevada Bureau of Mines and Geology
      • Huntington Creek Mining District
LaPointe, Daphne D., Tingley, Joseph V., Jones, Richard B. (199) Mineral resources of Elko County, Nevada. Bulletin 106. Nevada Bureau of Mines
      • Kinsley Mining District
LaPointe, Daphne D., Tingley, Joseph V., Jones, Richard B. (199) Mineral resources of Elko County, Nevada. Bulletin 106. Nevada Bureau of Mines
      • Loray Mining District
LaPointe, Daphne D., Tingley, Joseph V., Jones, Richard B. (199) Mineral resources of Elko County, Nevada. Bulletin 106. Nevada Bureau of Mines
      • Mud Springs Mining District
Castor, Stephen B., Ferdock, Gregory C. (2004) Minerals of Nevada. Special Publication 31. Nevada Bureau of Mines and Geology
      • Pequop Mining District
Castor, Stephen B., Ferdock, Gregory C. (2004) Minerals of Nevada. Special Publication 31. Nevada Bureau of Mines and Geology
      • Ruby Valley Mining District
Castor, Stephen B., Ferdock, Gregory C. (2004) Minerals of Nevada. Special Publication 31. Nevada Bureau of Mines and Geology
    • Esmeralda County
      • Cuprite Mining District
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Castor, Stephen B., Ferdock, Gregory C. (2004) Minerals of Nevada. Special Publication 31. Nevada Bureau of Mines and Geology
      • Montezuma Mining District
NBMG Bull 78 Geology and Mineral Deposits of Esmeralda County, Nevada
      • Red Mountain Mining District
NBMG Bull 78 Geology and Mineral Deposits of Esmeralda County, Nevada
      • Silver Peak Range
Castor, Stephen B., Ferdock, Gregory C. (2004) Minerals of Nevada. Special Publication 31. Nevada Bureau of Mines and Geology
      • Tonopah Mining District
NBMG Bull 78 Geology and Mineral Deposits of Esmeralda County, Nevada
NBMG Bull 78 Geology and Mineral Deposits of Esmeralda County, Nevada
    • Eureka County
      • Carlin Trend
        • Maggie Creek Mining Subdistrict
Newmont Mining Corporation
      • Grass Valley
Castor, Stephen B., Ferdock, Gregory C. (2004) Minerals of Nevada. Special Publication 31. Nevada Bureau of Mines and Geology
    • Lander County
      • Birch Creek Mining District
Garside NBMG Bull 81 (1973)
Nevada Bureau of Mines and Geology Online Documents OF06-19 - Nevada Uranium and Thorium Occurrences
      • Spencer Hot Springs Mining District
[Opal-A var. Opal-AN] Luetcke, Rolf (n.d.) Personal communication.
    • Lincoln County
      • Chief Mining District
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
NBMG Bull 73 Geology and Mineral Resources of Lincoln County, Nevada
    • Nye County
      • Bare Mountain
        • Bare Mountain Mining District (Fluorine Mining District)
          • Beatty
NBMG Bull 77 Geology and Mineral Resources of Southern Nye County, Nevada
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 558
USGS Bull 620D
Castor, Stephen B., Ferdock, Gregory C. (2004) Minerals of Nevada. Special Publication 31. Nevada Bureau of Mines and Geology
USGS Bull 620D
USGS Bull 620D
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
NBMG Bull 77 Geology and Mineral Resources of Southern Nye County, Nevada
NBMG Bull 77 Geology and Mineral Resources of Southern Nye County, Nevada
      • San Antonio Mountains
        • Tonopah Mining District
          • Tonopah
[Opal-A var. Opal-AN] Castor, Stephen B., Ferdock, Gregory C. (2004) Minerals of Nevada. Special Publication 31. Nevada Bureau of Mines and Geology
[Opal-A var. Opal-AN] Castor, Stephen B., Ferdock, Gregory C. (2004) Minerals of Nevada. Special Publication 31. Nevada Bureau of Mines and Geology
      • Toquima Range
        • Manhattan Mining District
          • Manhattan
Castor, Stephen B., Ferdock, Gregory C. (2004) Minerals of Nevada. Special Publication 31. Nevada Bureau of Mines and Geology
Castor, Stephen B., Ferdock, Gregory C. (2004) Minerals of Nevada. Special Publication 31. Nevada Bureau of Mines and Geology
        • Northumberland Mining District
MinRec 16(1):37-41.
Castor, Stephen B., Ferdock, Gregory C. (2004) Minerals of Nevada. Special Publication 31. Nevada Bureau of Mines and Geology
Nevada Bureau of Mines and Geology NBMG Open-File Report 96-3 By Stephen B. Castor, Christopher D. Henry, Lisa A. Shevenell
    • White Pine County
      • White Pine Mining District
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
  • Utah
    • Box Elder County
      • Crater Island
        • Crater Island Mining District
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
    • Tooele County
      • Gold Hill Mining District (Clifton Mining District)
        • Clifton
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Bullock, Kenneth C. (1981) Minerals and mineral localities of Utah. Bulletin 117. Utah Geological and Mineral Survey
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
        • Gold Hill
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Bullock, Kenneth C. (1981) Minerals and mineral localities of Utah. Bulletin 117. Utah Geological and Mineral Survey
Bullock, Kenneth C. (1981) Minerals and mineral localities of Utah. Bulletin 117. Utah Geological and Mineral Survey
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Bullock, Kenneth C. (1981) Minerals and mineral localities of Utah. Bulletin 117. Utah Geological and Mineral Survey
  • Washington
    • Lincoln County
[Opal-A var. Opal-AN] Dake, H. C. (1956) Northwest Gem Trails - A Field Guide for the Gem Hunter, Mineral Collector and Tourist (2nd ed.) Gembooks.
    • Spokane County
[Opal-A var. Opal-AN] www.mindat.org (n.d.) http://www.mindat.org/forum.php?pm,0,page=read,folder_id=inbox,pm_id=39097
Rocks & Min.:8:30.
 
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