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Opal from Idaho, USA

01493590017107042018076.jpg
Precious Opal

Spencer Opal Mine, Spencer, Clark County, Idaho, USA
07732100014949489226346.jpg
Opal

Spencer Opal Mine, Spencer, Clark County, Idaho, USA
02716580014975063819007.jpg
Opal

Challis, Bay Horse Mining District, Custer County, Idaho, USA
05298370017107112156955.jpg
Opal

Challis, Bay Horse Mining District, Custer County, Idaho, USA
03179460017106377288000.jpg
Precious Opal

Spencer Opal Mine, Spencer, Clark County, Idaho, USA
04809030014946270764572.jpg
Opal

Spencer Opal Mine, Spencer, Clark County, Idaho, USA
02716580014975063819007.jpg
Opal

Challis, Bay Horse Mining District, Custer County, Idaho, USA
09473630014949793439587.jpg
Opal

Challis, Bay Horse Mining District, Custer County, Idaho, USA
01493590017107042018076.jpg
Precious Opal

Spencer Opal Mine, Spencer, Clark County, Idaho, USA
02411550014949879316767.jpg
Opal

Spencer Opal Mine, Spencer, Clark County, Idaho, USA
03951740014963453224756.jpg
Opal

Challis, Bay Horse Mining District, Custer County, Idaho, USA
08207620014963453222061.jpg
Opal

Challis, Bay Horse Mining District, Custer County, Idaho, USA
USA
 
GΓΌbelin, E. and Wolgensinger, M. (1976) Edelstenen. Uitgeverij Artis, Brussel (in Dutch).
    • Ada County
      • Boise 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.
    • Adams County
      • Indian Valley Area
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
    • Boise County
      • Idaho City Mining District
        • Idaho City
Dake, H. C. (1956) Northwest Gem Trails - A Field Guide for the Gem Hunter, Mineral Collector and Tourist (2nd ed.) Gembooks.
    • Camas County
      • Fairfield Area
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
    • Clark County
      • Dubois
Kim Strange collection
      • Spencer
Extra Lapis - English No. 10 Opal
    • 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.
Dake, H. C. (1956) Northwest Gem Trails - A Field Guide for the Gem Hunter, Mineral Collector and Tourist (2nd ed.) Gembooks.
    • Elmore County
      • Glenns Ferry Area
(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.
      • King Hill Area
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
    • Gem County
      • Cascade Area
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
      • Emmett
The Mineralogist, v. 4, no. 1. p. 15, 15, 54.
    • Idaho County
C. Lemanski, Jr. (re-entry lost Mindat data).
      • Riggins
Ream, Lanny R. (2004) Idaho Minerals (2nd ed.) L. R. Ream Publishing, Coeur d'Alene, ID.
Tschernich, Rudy D., Wise, W. S. (1982) Paulingite: variations in composition. American Mineralogist, 67. 799-803
    • 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.
      • Salmon
Extra Lapis - English No. 10 Opal
    • Lincoln County
Dake, H. C. (1956) Northwest Gem Trails - A Field Guide for the Gem Hunter, Mineral Collector and Tourist (2nd ed.) Gembooks.
    • Nez Perce County
Dake, H. C. (1956) Northwest Gem Trails - A Field Guide for the Gem Hunter, Mineral Collector and Tourist (2nd ed.) Gembooks.
Beste, Bob (2005) Location Guide for Rockhounds in the United States (3rd ed.)
USGS Bulletin 1720b
Dake, H. C. (1956) Northwest Gem Trails - A Field Guide for the Gem Hunter, Mineral Collector and Tourist (2nd ed.) Gembooks.
      • French Mining District
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
      • Marsing Area
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Dake, H. C. (1956) Northwest Gem Trails - A Field Guide for the Gem Hunter, Mineral Collector and Tourist (2nd ed.) Gembooks.
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
      • Reynolds Area
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
      • Riddle Area
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
    • 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.
    • Washington County
      • Monroe Mining District
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
      • Weiser Mining District
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Ream, Lanny R. (1995) Idaho: Mineral Locality Index. Rocks & Minerals, 70 (4) 242-263 doi:10.1080/00357529.1995.9926628
(1956) Quicksilver deposits near Weiser, Washington County, Idaho. Bulletin Vol. 1042. US Geological Survey doi:10.3133/b1042d
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
        • Weiser
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
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