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Mass spectroscopy
Instrumental technique to separate and identify molecules. Gaseous ions are formed, with or without fragmentation. Their mass/charge ratios and relative electrical abundance are then measured or the spectra are recorded.
This category is also used for mass spectrometry.
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Results 1 - 10 of 50 listed by similarity [list alphabetically]
PDF Geochemical and Sulfur-Isotopic Signatures of Volcanogenic Massive Sulfide Deposits on Prince of Wales Island and Vicinity, Southeastern Alaska [New Window]
Geology, geochemistry, and genesis of the Greens Creek massive sulfide deposit, Admiralty Island, southeastern Alaska [New Window]
This metal ore deposit formed over a period of time in which its tectonic setting was changing, consequently it shows a range of characteristics typical of several different types of deposits. Rock geochemistry data are provided in tabular form.
Alaska Geochemical Database [New Window]
Geochemical analyses of rock, sediment, soil, mineral, and heavy mineral concentrate samples in Alaska analyzed from 1962 through 2009
Alaska Geochemical Database (AGDB)-Geochemical data for rock, sediment, soil, mineral, and concentrate sample media [New Window]
Geochemical analyses of rocks, mineral separates, bulk samples from lake and stream sediments, heavy mineral concentrates, and soils collected by USGS from 1962 to 2009.
Analytical Results and Sample Locations of Reanalyzed NURE Stream-Sediment and Soil Samples for the Humboldt River Basin Mineral-Environmental Assessment, Northern Nevada [New Window]
The U.S. Geological Survey (USGS) and the Bureau of Land Management (BLM) collected stream-sediment and soil samples in order to evaluate the geochemistry of the Humboldt River Basin.
Aquatic assessment of the Ely Copper Mine Superfund site, Vershire, Vermont [New Window]
A wide variety of geochemical analyses show strong local impact on water quality in this area of historical copper mining.
Aqueous geochemical data from the analysis of stream-water samples collected in June and August 2008--Taylor Mountains 1:250,000- and Dillingham D-4 1:63,360-scale quadrangles, Alaska [New Window]
Measurements on 92 samples, including pH, conductivity, water temperature, major cation and anion concentrations, and trace-element concentrations.
Aqueous geochemical data from the analysis of stream-water samples collected in June and July 2006-Taylor Mountains 1:250,00-scale quadrangle, Alaska [New Window]
Analyses of 72 water samples include pH, conductivity, water temperature, major cation and anion concentrations, trace-element concentrations, and dissolved organic-carbon concentrations.
Bedrock and soil geochemistry from Voyageurs National Park, Minnesota [New Window]
Analyses to establish the background and baseline geochemistry for bedrock and soil in the region, and to determine terrestrial mercury sources and sinks in the park
Case study of the environmental signature of a recently abandoned, carbonate-hosted replacement deposit: The Clayton Mine, Idaho [New Window]
Multi-element geochemical analysis of host rock, ore, mine waste, flotation-mill tailings, slag, stream sediments, creek and adit waters, and leachates of mine waste and mill tailings.
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