David A John
David is a Scientist Emeritus with the Geology, Minerals, Energy, and Geophysics Science Center
Science and Products
Filter Total Items: 59
Geologic setting and characteristic of mineral deposits in the central Wasatch Mountains, Utah Geologic setting and characteristic of mineral deposits in the central Wasatch Mountains, Utah
Base- and precious-metal deposits in the central Wasatch Mountains southeast of Salt Lake City were mined for more than 100 years beginning in 1868. Deposits present in the Park City, Little Cottonwood, and Big Cottonwood mining districts include Ag-Pb-Zn ± Cu ± Au replacements and veins, a low-grade porphyry Cu-Au deposit, Cu-bearing skarns, a quartz monzonite-type (low F) porphyry Mo...
Authors
David A. John
Grade and tonnage model of tungsten skarn deposits, Nevada Grade and tonnage model of tungsten skarn deposits, Nevada
No abstract available.
Authors
David A. John, James D. Bliss
Geologic map of the La Plata Canyon quadrangle, Churchill County, Nevada Geologic map of the La Plata Canyon quadrangle, Churchill County, Nevada
No abstract available.
Authors
David A. John, Norman J. Silberling
Geology and mineral resources of the Reno 1° by 2° quadrangle, Nevada and California Geology and mineral resources of the Reno 1° by 2° quadrangle, Nevada and California
No abstract available.
Authors
David A. John, John H. Stewart, J.E. Kilburn, Norman J. Silberling, L. C. Rowan
The Conterminous United States Mineral Assessment Project; background information to accompany folio of geologic, geochemical, geophysical, and mineral resources maps of the Reno 1 by 2 degree Quadrangle, Nevada and California The Conterminous United States Mineral Assessment Project; background information to accompany folio of geologic, geochemical, geophysical, and mineral resources maps of the Reno 1 by 2 degree Quadrangle, Nevada and California
The Reno 1 ? by 2 ? quadrangle in west-central Nevada was studied by an interdisciplinary research team to appraise its mineral resources. The assessment is based on geological, geochemical, and geophysical field and laboratory investigations, the results of which are published as a folio of maps, reports, figures, and tables, with accompanying discussions. This circular provides...
Authors
David A. John, John H. Stewart, J. D. Hendricks, L. C. Rowan, Donald Plouff
Stratigraphy, regional distribution, and reconnaissance geochemistry of Oligocene and Miocene volcanic rocks in the Paradise Range and northern Pactolus hills, Nye County, Nevada Stratigraphy, regional distribution, and reconnaissance geochemistry of Oligocene and Miocene volcanic rocks in the Paradise Range and northern Pactolus hills, Nye County, Nevada
No abstract available.
Authors
David A. John
Science and Products
Filter Total Items: 59
Geologic setting and characteristic of mineral deposits in the central Wasatch Mountains, Utah Geologic setting and characteristic of mineral deposits in the central Wasatch Mountains, Utah
Base- and precious-metal deposits in the central Wasatch Mountains southeast of Salt Lake City were mined for more than 100 years beginning in 1868. Deposits present in the Park City, Little Cottonwood, and Big Cottonwood mining districts include Ag-Pb-Zn ± Cu ± Au replacements and veins, a low-grade porphyry Cu-Au deposit, Cu-bearing skarns, a quartz monzonite-type (low F) porphyry Mo...
Authors
David A. John
Grade and tonnage model of tungsten skarn deposits, Nevada Grade and tonnage model of tungsten skarn deposits, Nevada
No abstract available.
Authors
David A. John, James D. Bliss
Geologic map of the La Plata Canyon quadrangle, Churchill County, Nevada Geologic map of the La Plata Canyon quadrangle, Churchill County, Nevada
No abstract available.
Authors
David A. John, Norman J. Silberling
Geology and mineral resources of the Reno 1° by 2° quadrangle, Nevada and California Geology and mineral resources of the Reno 1° by 2° quadrangle, Nevada and California
No abstract available.
Authors
David A. John, John H. Stewart, J.E. Kilburn, Norman J. Silberling, L. C. Rowan
The Conterminous United States Mineral Assessment Project; background information to accompany folio of geologic, geochemical, geophysical, and mineral resources maps of the Reno 1 by 2 degree Quadrangle, Nevada and California The Conterminous United States Mineral Assessment Project; background information to accompany folio of geologic, geochemical, geophysical, and mineral resources maps of the Reno 1 by 2 degree Quadrangle, Nevada and California
The Reno 1 ? by 2 ? quadrangle in west-central Nevada was studied by an interdisciplinary research team to appraise its mineral resources. The assessment is based on geological, geochemical, and geophysical field and laboratory investigations, the results of which are published as a folio of maps, reports, figures, and tables, with accompanying discussions. This circular provides...
Authors
David A. John, John H. Stewart, J. D. Hendricks, L. C. Rowan, Donald Plouff
Stratigraphy, regional distribution, and reconnaissance geochemistry of Oligocene and Miocene volcanic rocks in the Paradise Range and northern Pactolus hills, Nye County, Nevada Stratigraphy, regional distribution, and reconnaissance geochemistry of Oligocene and Miocene volcanic rocks in the Paradise Range and northern Pactolus hills, Nye County, Nevada
No abstract available.
Authors
David A. John