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Published: 1949
Total Pages: 1102
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DOWNLOAD EBOOKRead and Download eBook Full
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Published: 1983
Total Pages: 568
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DOWNLOAD EBOOKAuthor: Betty M. Miller
Publisher:
Published: 1988
Total Pages: 386
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DOWNLOAD EBOOKThe Gospel-Hump Wilderness lies in central Idaho. A mineral survey of the 206,500 acre area in Idaho County was conducted by the U.S. Geological Survey and the U.S. Bureau of Mines during 1980 to 1983. The study consisted of new geologic mapping, geochemical sampling of the wilderness and vicinity, geophysical surveying, and investigation of claim blocks in or near the wilderness. Fractures in the roof zone of plutons of the Idaho batholith host gold and silver deposits in mining districts that are contiguous with and included in the Gospel- Hump Wilderness. Subeconomic gold and silver resources are indicated and inferred at the War Eagle and Blue Jay mines (southeastern part of the area). Parts of the eastern half of the wilderness area, which are included in mining districts and which are along the trends of known mineralized fractures, have a high potential for gold and silver resources and moderate potential for copper, lead, zinc, and molybdenum resources in quartz fissure-veins. Other parts of the wilderness that have the same geologic setting have a moderate potential for gold and silver resources in undiscovered quartz veins that lie along the trend of or are parallel to known veins. The western third of the wilderness has a moderate potential for tungsten, silver, lead, copper, nickel, and possibly gold resources in skarn or metasomatic replacement deposits along thrust faults adjacent to carbonate units.
Author: Idaho Bureau of Mines and Geology
Publisher:
Published: 1961
Total Pages: 94
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DOWNLOAD EBOOKAuthor: United States. Congress. House. Committee on Rivers and Harbors
Publisher:
Published: 1941
Total Pages: 40
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DOWNLOAD EBOOKAuthor: United States. Bureau of Mines. Technical Library, Pittsburgh
Publisher:
Published: 1968
Total Pages: 778
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DOWNLOAD EBOOKAuthor: United States. Department of the Interior. Library
Publisher:
Published: 1969
Total Pages: 734
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DOWNLOAD EBOOKAuthor: Dale R. Spangenberg
Publisher:
Published: 1983
Total Pages: 688
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DOWNLOAD EBOOKAuthor:
Publisher:
Published: 1968
Total Pages: 1362
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DOWNLOAD EBOOK1919/28 cumulation includes material previously issued in the 1919/20-1935/36 issues and also material not published separately for 1927/28. 1929/39 cumulation includes material previously issued in the 1929/30-1935/36 issues and also material for 1937-39 not published separately.