Slack, John F.

About the author

U.S. Geological Survey, Eastern Region, Midwest area, Geology discipline
Miocene, Oligocene, Aluminum, Antimony, Arsenic, Atomic emission spectroscopy, Barium, Beryllium, Bismuth, Boron, Cadmium, Calcium, Carbon, Cerium, Chemical analysis, Chromium, Cobalt, Copper, Datasets, Dysprosium, Economic geology, Electron microscopy, Erbium, Europium, Field sampling, Fluorine, Gadolinium, Gallium, Gamma-ray logging, Geochemistry, Geochronology, Geologic history, Geospatial datasets, Germanium, Gold, Grain-size analysis, Gravimeter measurement, Hafnium, Holmium, Iron, Lanthanum, Lead, Light stable isotope analysis, Lithium, Lutetium, Magnesium, Manganese, Maps and atlases, Mass spectroscopy, Metallic mineral resources, Mine drainage, Mine waste, Mineral deposits, Mineral resources, Mineralogy, Molybdenum, Natural resource exploration, Neodymium, Neutron activation analysis, Nickel, Niobium, Nonmetallic mineral resources, Ore formation, Paleontology, Petrography, Phosphorus, Plutonic rocks, Potassium, Potassium-argon analysis, Praseodymium, Radiometric dating, Reports, Resource supply and demand, Rhenium, Rubidium, Samarium, Scandium, Selenium, Silver, Sodium, Strontium, Sulfur, Tellurium, Terbium, Thallium, Thorium, Thulium, Titanium, Toxic trace element contamination, Tracer study, Tungsten, Uranium, Uranium-lead analysis, Vanadium, Volcanic activity, Volcanic rocks, X-ray fluorescence, Ytterbium, Yttrium, Zinc, Zirconium, Craters, Mineral deposit areas, Ash-flow tuff, Black shale, Carbonate rock, Rhyolite, Volcanic rock, Copper, Gold, Lead, Phosphorus-Phosphates, Silver, Zinc, DBF, Microsoft Excel format, Portable Document Format, Comma-delimited text, Shapefile, GeoscientificInformation, Cobalt

Whole Rock Geochemical Data For Altered And Mineralized Rocks, Red Dog Zn-Pb-Ag District, Western Brooks Range, Alaska

This report presents geochemical analyses for 220 mostly altered and mineralized rock samples from the Red Dog Zn-Pb-Ag district in the western Brooks Range of northern Alaska.

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Whole Rock Geochemical Data For Paleozoic Sedimentary Rocks of the Western Brooks Range, Alaska

This report presents geochemical analyses for 210 unaltered and unmineralized rock samples of Paleozoic age in the western Brooks Range of northern Alaska.

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Geochemical and Sulfur-Isotopic Signatures of Volcanogenic Massive Sulfide Deposits on Prince of Wales Island and Vicinity, Southeastern Alaska

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Descriptive and geoenvironmental model for Co-Cu-Au deposits in metasedimentary rocks

A compilation of global data on cobalt-copper-gold deposits hosted by metasedimentary rocks refines previous descriptive models for their occurrence and provides important information for mineral resource assessments and exploration programs.

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Cobalt

Cobalt is a silvery gray metal that has diverse uses due to its ferromagnetism, hardness and wear-resistance when alloyed with other metals, low thermal and electrical conductivity, high melting point, multiple valences, and color effects with silica.

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Mesozoic magmatism and base-metal mineralization in the Fortymile mining district, eastern Alaska--Initial results of petrographic, geochemical, and isotopic studies in the Mount Veta area

Initial results of a petrographic, geochemical, and isotopic study of Mesozoic intrusive rocks and spatially associated Zn-Pb-Ag-Cu-Au prospects in the area.

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Depositional Setting and Geochemistry of Phosphorites and Metalliferous Black Shales in the Carboniferous-Permian Lisburne Group, Northern Alaska

The purpose of this paper is to present new sedimentological, paleontological, and geochemical data that allow us to define the geographic and stratigraphic extent and depositional setting of these temporally unusual phosphorites.

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Whole-rock and sulfide-mineral geochemical data for samples from volcanogenic massive sulfide deposits of the Bonnifield district, east-central Alaska

The data consist of major- and trace-element whole-rock geochemical analyses and major- and trace-element analyses of sulfide minerals determined by electron microprobe and laser ablation–inductively coupled plasma–mass spectrometry (LA-ICP-MS) techniques

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Cobalt—Styles of deposits and the search for primary deposits

Cobalt (Co) is a potentially critical mineral. The vast majority of cobalt is a byproduct of copper and (or) nickel production. Cobalt is increasingly used in magnets and rechargeable batteries. More than 50 percent of primary cobalt production is from th

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Geochronology and geology of late Oligocene through Miocene volcanism and mineralization in the western San Juan mountains, Colorado

New age determinations with descriptions of sample locations and analytical details.

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