Cliff D Taylor (Former Employee)
Science and Products
Filter Total Items: 56
Gold deposit styles and placer gold characterisation in northern and east-central Madagascar Gold deposit styles and placer gold characterisation in northern and east-central Madagascar
Microchemical characterisation of bedrock and placer gold grains from six gold districts within the Archaean domains and intervening Neoproterozoic Anaboriana-Manampotsy belt of northern and east-central Madagascar show few opaque inclusions (e.g pyrrhotite, Bi tellurides) but wide range of Ag contents (40wt%). Some districts exhibit multiple source populations of grains. The...
Authors
Peter E. J Pitfield, Michael T. Styles, Cliff D. Taylor, Roger M. Key, Wilfried Bauer, A Vonimanitra Ralison
Geology and Nonfuel Mineral Deposits of Africa and the Middle East Geology and Nonfuel Mineral Deposits of Africa and the Middle East
A nation's endowment of nonfuel mineral resources, relative to the world's endowment, is a fundamental consideration in decisions related to a nation's economic and environmental well being and security. Knowledge of the worldwide abundance, distribution, and general geologic setting of mineral commodities provides a framework within which a nation can make decisions about economic...
Authors
Cliff D. Taylor, Klaus J. Schulz, Jeff L. Doebrich, Greta Orris, Paul Denning, Michael J. Kirschbaum
Rates of zinc and trace metal release from dissolving sphalerite at pH 2.0-4.0 Rates of zinc and trace metal release from dissolving sphalerite at pH 2.0-4.0
High-Fe and low-Fe sphalerite samples were reacted under controlled pH conditions to determine nonoxidative rates of release of Zn and trace metals from the solid-phase. The release (solubilization) of trace metals from dissolving sphalerite to the aqueous phase can be characterized by a kinetic distribution coefficient, (Dtr), which is defined as [(Rtr/X(tr)Sph)/(RZn/X(Zn) Sph)], where...
Authors
M.R. Stanton, P. A. Gemery-Hill, Wayne C. Shanks, C. D. Taylor
The metallogeny of Late Triassic rifting of the Alexander terrane in southeastern Alaska and northwestern British Columbia The metallogeny of Late Triassic rifting of the Alexander terrane in southeastern Alaska and northwestern British Columbia
A belt of unusual volcanogenic massive sulfide (VMS) occurrences is located along the eastern margin of the Alexander terrane throughout southeastern Alaska and northwestern British Columbia and exhibits a range of characteristics consistent with a variety of syngenetic to epigenetic deposit types. Deposits within this belt include Greens Creek and Windy Craggy, the economically most...
Authors
C. D. Taylor, W. R. Premo, A. L. Meier, J.E. Taggart
Descriptions of mineral occurrences and interpretation of mineralized rock geochemical data in the Stikine geophysical survey area, Southeastern Alaska Descriptions of mineral occurrences and interpretation of mineralized rock geochemical data in the Stikine geophysical survey area, Southeastern Alaska
Detailed descriptions of some of the more significant mineral occurrences in the Stikine Airborne Geophysical Survey Project Area are presented based upon site-specific examinations by the U.S. Geological Survey in May of 1998. Reconnaissance geochemical data on unmineralized igneous and sedimentary host rocks, and mineralized rocks are also presented and are accompanied by a brief...
Authors
Cliff D. Taylor
Petrogenesis of late-stage granites and Y-REE-Zr-Nb-enriched vein dikes of the Bokan Mountain stock, Prince of Wales Island, southeastern Alaska Petrogenesis of late-stage granites and Y-REE-Zr-Nb-enriched vein dikes of the Bokan Mountain stock, Prince of Wales Island, southeastern Alaska
No abstract available.
Authors
J.A. Philpotts, C. D. Taylor, Mitsumoto Tatsumoto, H. E. Belkin
Science and Products
Filter Total Items: 56
Gold deposit styles and placer gold characterisation in northern and east-central Madagascar Gold deposit styles and placer gold characterisation in northern and east-central Madagascar
Microchemical characterisation of bedrock and placer gold grains from six gold districts within the Archaean domains and intervening Neoproterozoic Anaboriana-Manampotsy belt of northern and east-central Madagascar show few opaque inclusions (e.g pyrrhotite, Bi tellurides) but wide range of Ag contents (40wt%). Some districts exhibit multiple source populations of grains. The...
Authors
Peter E. J Pitfield, Michael T. Styles, Cliff D. Taylor, Roger M. Key, Wilfried Bauer, A Vonimanitra Ralison
Geology and Nonfuel Mineral Deposits of Africa and the Middle East Geology and Nonfuel Mineral Deposits of Africa and the Middle East
A nation's endowment of nonfuel mineral resources, relative to the world's endowment, is a fundamental consideration in decisions related to a nation's economic and environmental well being and security. Knowledge of the worldwide abundance, distribution, and general geologic setting of mineral commodities provides a framework within which a nation can make decisions about economic...
Authors
Cliff D. Taylor, Klaus J. Schulz, Jeff L. Doebrich, Greta Orris, Paul Denning, Michael J. Kirschbaum
Rates of zinc and trace metal release from dissolving sphalerite at pH 2.0-4.0 Rates of zinc and trace metal release from dissolving sphalerite at pH 2.0-4.0
High-Fe and low-Fe sphalerite samples were reacted under controlled pH conditions to determine nonoxidative rates of release of Zn and trace metals from the solid-phase. The release (solubilization) of trace metals from dissolving sphalerite to the aqueous phase can be characterized by a kinetic distribution coefficient, (Dtr), which is defined as [(Rtr/X(tr)Sph)/(RZn/X(Zn) Sph)], where...
Authors
M.R. Stanton, P. A. Gemery-Hill, Wayne C. Shanks, C. D. Taylor
The metallogeny of Late Triassic rifting of the Alexander terrane in southeastern Alaska and northwestern British Columbia The metallogeny of Late Triassic rifting of the Alexander terrane in southeastern Alaska and northwestern British Columbia
A belt of unusual volcanogenic massive sulfide (VMS) occurrences is located along the eastern margin of the Alexander terrane throughout southeastern Alaska and northwestern British Columbia and exhibits a range of characteristics consistent with a variety of syngenetic to epigenetic deposit types. Deposits within this belt include Greens Creek and Windy Craggy, the economically most...
Authors
C. D. Taylor, W. R. Premo, A. L. Meier, J.E. Taggart
Descriptions of mineral occurrences and interpretation of mineralized rock geochemical data in the Stikine geophysical survey area, Southeastern Alaska Descriptions of mineral occurrences and interpretation of mineralized rock geochemical data in the Stikine geophysical survey area, Southeastern Alaska
Detailed descriptions of some of the more significant mineral occurrences in the Stikine Airborne Geophysical Survey Project Area are presented based upon site-specific examinations by the U.S. Geological Survey in May of 1998. Reconnaissance geochemical data on unmineralized igneous and sedimentary host rocks, and mineralized rocks are also presented and are accompanied by a brief...
Authors
Cliff D. Taylor
Petrogenesis of late-stage granites and Y-REE-Zr-Nb-enriched vein dikes of the Bokan Mountain stock, Prince of Wales Island, southeastern Alaska Petrogenesis of late-stage granites and Y-REE-Zr-Nb-enriched vein dikes of the Bokan Mountain stock, Prince of Wales Island, southeastern Alaska
No abstract available.
Authors
J.A. Philpotts, C. D. Taylor, Mitsumoto Tatsumoto, H. E. Belkin