George Case
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View article: Insights into the metamorphic history and origin of flake graphite mineralization at the Graphite Creek graphite deposit, Seward Peninsula, Alaska, USA
Insights into the metamorphic history and origin of flake graphite mineralization at the Graphite Creek graphite deposit, Seward Peninsula, Alaska, USA Open
Graphite Creek is an unusual flake graphite deposit located on the Seward Peninsula, Alaska, USA. We present field observations, uranium-lead (U–Pb) monazite and titanite geochronology, carbon (C) and sulfur (S) stable isotope geochemistry…
View article: Alaska focus area definition for data acquisition for potential domestic sources of critical minerals in Alaska for antimony, barite, beryllium, chromium, fluorspar, hafnium, magnesium, manganese, uranium, vanadium, and zirconium
Alaska focus area definition for data acquisition for potential domestic sources of critical minerals in Alaska for antimony, barite, beryllium, chromium, fluorspar, hafnium, magnesium, manganese, uranium, vanadium, and zirconium Open
First posted July 14, 2022 For additional information, contact: Director, Alaska Science CenterU.S. Geological Survey4210 University DriveAnchorage, Alaska 99508Contact Pubs Warehouse Phase 3 of the Earth Mapping Resources Initiative (Eart…
View article: Geospatial analysis delineates lode gold prospectivity in Alaska
Geospatial analysis delineates lode gold prospectivity in Alaska Open
First posted May 18, 2022 For additional information, contact: Director,Alaska Science CenterU.S. Geological Survey4210 University DriveAnchorage, Alaska 99508 Comprehensive, data-driven geographic information system analyses utilize publi…
View article: Qualitative Mineral Potential Map of Tungsten Skarn in the Yukon-Tanana Uplands, Eastern Alaska, USA, 2021
Qualitative Mineral Potential Map of Tungsten Skarn in the Yukon-Tanana Uplands, Eastern Alaska, USA, 2021 Open
The data release includes GIS data that map potential for tungsten skarn mineralization in permissive tracts in the Yukon-Tanana Uplands, Eastern Alaska, along with tables listing keywords and procedures used to produce the permissive trac…
View article: Chemical analysis of archived stream-sediment samples, Alaska
Chemical analysis of archived stream-sediment samples, Alaska Open
First posted June 24, 2021 For additional information, contact: Director, Alaska Science CenterU.S. Geological Survey4210 University DriveAnchorage, Alaska 99508 Geochemical data are presented for more than 1,500 archived stream-sediment s…
View article: GIS-based identification of areas that have resource potential for lode gold in Alaska
GIS-based identification of areas that have resource potential for lode gold in Alaska Open
First posted June 29, 2021 Revised October 28, 2021 For additional information, contact: Director,Alaska Science CenterU.S. Geological Survey4210 University DriveAnchorage, Alaska 99508 Several comprehensive, data-driven geographic informa…
View article: Tungsten skarn potential of the Yukon-Tanana Upland, eastern Alaska, USA—A mineral resource assessment
Tungsten skarn potential of the Yukon-Tanana Upland, eastern Alaska, USA—A mineral resource assessment Open
Tungsten (W) is used in a variety of industrial and technological applications and has been identified as a critical mineral for the United States, India, the European Union, and other countries. These countries rely on W imports mostly fr…
View article: Evaluation of the analytical methods used to determine the elemental concentrations found in the stream geochemical dataset compiled for Alaska
Evaluation of the analytical methods used to determine the elemental concentrations found in the stream geochemical dataset compiled for Alaska Open
First posted May 26, 2020 For additional information, contact: Director,Alaska Science CenterU.S. Geological Survey4210 University DriveAnchorage, Alaska 99508 A recent U.S. Geological Survey data compilation of stream-sediment geochemistr…
View article: Sup 4: Delineating the structural controls on the genesis of iron oxide–Cu–Au deposits genesis through implicit modelling: a case study from the E1 Group, Cloncurry District, Australia
Sup 4: Delineating the structural controls on the genesis of iron oxide–Cu–Au deposits genesis through implicit modelling: a case study from the E1 Group, Cloncurry District, Australia Open
Appendix Sup 1: Probability plots of assay data for modelled elements. Plots made in ioGAS software. Power transform applied to y-axes of all elements. Note that Fe, P and S do not follow normal/log-normal distributions. Appendix Sup 2: Su…
View article: Delineating the structural controls on the genesis of iron oxide–Cu–Au deposits genesis through implicit modellinging: A a case study from the E1 Group, Cloncurry District, Australia
Delineating the structural controls on the genesis of iron oxide–Cu–Au deposits genesis through implicit modellinging: A a case study from the E1 Group, Cloncurry District, Australia Open
Iron oxide–Cu–Au (IOCG) deposits encompass a range of ore body shapes, including strata-bound replacement ores and hydrothermal breccias. We use the implicit method to make a detailed three-dimensional geological model of a strata-bound IO…
View article: Sup 2: Delineating the structural controls on the genesis of iron oxide–Cu–Au deposits genesis through implicit modelling: a case study from the E1 Group, Cloncurry District, Australia
Sup 2: Delineating the structural controls on the genesis of iron oxide–Cu–Au deposits genesis through implicit modelling: a case study from the E1 Group, Cloncurry District, Australia Open
Appendix Sup 1: Probability plots of assay data for modelled elements. Plots made in ioGAS software. Power transform applied to y-axes of all elements. Note that Fe, P and S do not follow normal/log-normal distributions. Appendix Sup 2: Su…
View article: Genesis of the E1 group of iron oxide-copper-gold deposits, Cloncurry district, North West Queensland
Genesis of the E1 group of iron oxide-copper-gold deposits, Cloncurry district, North West Queensland Open
The E1 Group of iron oxide-copper-gold (IOCG) deposits is located in the metal-rich Cloncurry District of northwest Queensland. The E1 Group contains a total resource of 47 Mt averaging 0.72% Cu and 0.21 g/t Au, and has not been previously…
View article: Fluid inclusion, trace element, and isotopic characteristics of mineralization-associated hydrothermal barite in the Cloncurry IOCG district, Northwest Queensland
Fluid inclusion, trace element, and isotopic characteristics of mineralization-associated hydrothermal barite in the Cloncurry IOCG district, Northwest Queensland Open
Hydrothermal barite is a common yet rarely studied gangue component of Australian Proterozoic iron oxide-Cu-Au deposits in the Gawler Craton, South Australia, and the Cloncurry district, Northwest Queensland. However, the Cloncurry distric…
View article: The evolution and potential sources of mineralizing fluids of the E1 group of IOCG deposits, Cloncurry District, Northwest Queensland, Australia: implications from fluid inclusion and SHRIMP S isotope analyses
The evolution and potential sources of mineralizing fluids of the E1 group of IOCG deposits, Cloncurry District, Northwest Queensland, Australia: implications from fluid inclusion and SHRIMP S isotope analyses Open
The E1 Group of Proterozoic iron oxide-Cu-Au deposits—E1 North, East, and South—is located 6 km east of the Ernest Henry IOCG deposit, in the far northeast of the polymetallic Cloncurry district of northwest Queensland, and hosts a total r…