Verplanck, Philip L.

About the author

ORCID: 0000-0002-3653-6419
Abandoned mines and quarries, Alteration, Aluminum, Antimony, Arsenic, Atomic absorption analysis, Atomic emission spectroscopy, Barium, Beryllium, Bismuth, Boron, Business and economics, Cadmium, Calcium, Carbon, Carbon isotope analysis, Cerium, Cesium, Chemical analysis, Chlorine, Chromatography, Chromium, Cobalt, Copper, Core analysis, Datasets, Dissolved gases, Dissolved metals, Dysprosium, Ecology, Economic geology, Erbium, Europium, Fluorine, Gadolinium, Gallium, Geochemistry, Geology, Geospatial datasets, Germanium, Gold, Groundwater flow, Hafnium, Holmium, Indium, Iodine, Iron, Isotopic analysis, Lanthanide series elements, Lanthanum, Lead, Light stable isotope analysis, Lithium, Lutetium, Macroinvertebrates, Magnesium, Manganese, Mass spectroscopy, Mathematical modeling, Mercury, Metallic mineral resources, Mine drainage, Mine waste, Mineral deposits, Mineral resources, Mineralogy, Mining hazards, Molybdenum, Natural resource exploration, Neodymium, Neutron activation analysis, Nickel, Niobium, Nitrogen, Oxygen isotope analysis, Palladium, Particle-beam spectroscopy, Phosphorus, Platinum, Potassium, Praseodymium, Promethium, Rare earth elements, Resource supply and demand, Rocks and deposits, Rubidium, Salinity, Samarium, Scandium, Selenium, Silicon, Silver, Sodium, Strontium, Sulfur, Surface water (non-marine), Surface water quality, Tantalum, Tellurium, Terbium, Thallium, Thorium, Thulium, Tin, Titanium, Tungsten, Uranium, Vanadium, Water chemistry, Water pH, Water sampling, Water temperature, X-ray fluorescence, Xenon, Ytterbium, Yttrium, Zinc, Zirconium, Mine sites, Mineral deposit areas, Springs (hydrographic), Dolostone, Intrusive carbonatite, Peralkaline granite, Porphyry, Microsoft Excel format, Portable Document Format, Comma-delimited text, File geodatabase (Esri), Shapefile, Molybdenum, Rare earths

A deposit model for carbonatite and peralkaline intrusion-related rare earth element deposits

Carbonatite and alkaline intrusive complexes, as well as their weathering products, are the primary sources of rare earth elements. A wide variety of other commodities have been exploited from carbonatites and alkaline igneous rocks including

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Whole-rock geochemical data for the Bear Lodge alkaline complex, Wyoming: 2009 - 2013

Geochemical analysis of alkaline igneous rocks, carbonatites, and weathered and oxidized samples in and near a rare-earth element deposit. Data are provided in Microsoft Excel format.

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Geochemical data for the Elk Creek alkaline complex, southeast Nebraska

Analytical data from a suite of rock and mineral samples collected from drill core within the Elk Creek alkaline complex, which hosts the Elk Creek carbonatite, a multilithologic carbonatite enriched in niobium, rare earth elements (REEs), scandium, and titanium. Data are provide in CSV format.

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Strontium isotopic data from the Mount Emmons-Redwell area, Crested Butte, Colorado

Strontium isotopic data from water and rock samples collected in this area. Data are provided in CSV format.

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Hydrogeochemical investigation of the Standard Mine vicinity, upper Elk Creek basin, Colorado

Ground- and surface-water samples were collected in order to characterize the local ground-water flow system, determine metal concentrations in local ground water, and understand factors controlling the discharge of metal-rich waters from the mine.

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Chemistry of Selected Core Samples, Concentrate, Tailings, and Tailings Pond Waters: Pea Ridge Iron (-Lanthanide-Gold) Deposit, Washington County, Missouri

This report examines potential sources of lanthanide elements [rare earth elements (REE)] with the objective of providing up-to-date geologic information regarding mineral commodities likely to have increased demand in the near term.

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Spring runoff water-chemistry data from the Standard Mine and Elk Creek, Gunnison County, Colorado, 2010

Periodic sampling of water during the spring of 2010 was carried out to understand the range and timing of variation in pH and metal concentration, and help evaluate variation in water quality during spring runoff.

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The rare-earth elements: vital to modern technologies and lifestyles

Explains how and where rare-earth resources form and concentrate and how they are used and interact with the environment to affect human and ecosystem health. Discusses supply and demand trends and where undiscovered sources of rare-earths might be found.

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Rare-Earth Elements

Because of their unusual physical and chemical properties, the REEs have diverse defense, energy, industrial, and military technology applications including glass, petroleum refining, automobiles, and magnets.

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Rare earth element mineral deposits in the United States

Summarizes importance of rare earth elements, characteristics of REE deposits, REE-bearing minerals, and the types of mineral deposits that contain these elements.

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Deposit model for heavy-mineral sands in coastal environments

Sedimentary deposits of dense minerals that accumulate with sand, silt, and clay in coastal environments, locally forming economic concentrations of the heavy minerĀ­als.

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Geochemical analyses of surface water, groundwater and springs surrounding Mount Emmons near Crested Butte, Colorado (ver. 2.0, September 2020)

Inorganic chemical analysis of surface- and groundwater and springs in this area to understand natural versus anthropogenic inputs from mineralized and hydrothermally altered areas. Data are provided in Esri file geodatabase, CSV, and shapefile formats.

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Whole rock major, minor, and trace element geochemistry of the upper part of the Mount Emmons-Redwell porphyry molybdenum (Climax-type) deposit, Redwell Basin, Crested Butte, Colorado

Whole rock major, minor, and trace element geochemical data from outcrops, waste rock piles, and drill core from the upper part of this deposit, the associated base metal vein system, and the surrounding hydrothermally altered to unaltered country rock. Data are provided in CSV format.

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Geospatial database for regional environmental assessment of central Colorado

Study focusing on the effects of historical mining on Forest Service lands in this area.

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