Robert R. Seal
Robert (Bob) Seal is a Research Geologist with the USGS Geology, Energy & Minerals (GEM) Science Center in Reston, VA.
Science and Products
Geochemical characterization, acid neutralization potential, and phosphate removal capacity of modern and legacy iron and steel slag from the Chicago-Gary area of Illinois and Indiana, USA
Estimates of mineral abundances based on Rietveld refinement of X-ray diffraction data from mill tailings and other ore processing materials
Chemistry, morphology, modal mineralogy, and photomicrographs of amphiboles and other minerals in the Ironwood Iron-Formation, Gogebic Iron Range, Wisconsin, USA
Oxide and Cation Compositions of Olivine Grains from Drill Core in the Duluth Complex, Minnesota
Oxide and Cation Compositions of Feldspar Grains from Drill Core of the Duluth Complex, Minnesota
Oxide and Cation Compositions of Pyroxene Grains from Drill Core of the Duluth Complex, Minnesota
Major, Minor, and Trace Element Compositions of Bulk Drill Core Samples from the Duluth Complex, Minnesota
Global Distribution of Selected Mines, Deposits, and Districts of Critical Minerals
USGS critical minerals review
Tellurium
Graphite
Beryllium
Barite (Barium)
Titanium
Zirconium and hafnium
Cobalt
Vanadium
Platinum-group elements
The platinum-group elements (PGEs)—platinum, palladium, rhodium, ruthenium, iridium, and osmium—are metals that have similar physical and chemical properties and tend to occur together in nature. PGEs are indispensable to many industrial applications but are mined in only a few places. The availability and accessibility of PGEs could be disrupted by economic, environmental, political, and social e
Antimony
Rare-earth elements
Science and Products
Geochemical characterization, acid neutralization potential, and phosphate removal capacity of modern and legacy iron and steel slag from the Chicago-Gary area of Illinois and Indiana, USA
Estimates of mineral abundances based on Rietveld refinement of X-ray diffraction data from mill tailings and other ore processing materials
Chemistry, morphology, modal mineralogy, and photomicrographs of amphiboles and other minerals in the Ironwood Iron-Formation, Gogebic Iron Range, Wisconsin, USA
Oxide and Cation Compositions of Olivine Grains from Drill Core in the Duluth Complex, Minnesota
Oxide and Cation Compositions of Feldspar Grains from Drill Core of the Duluth Complex, Minnesota
Oxide and Cation Compositions of Pyroxene Grains from Drill Core of the Duluth Complex, Minnesota
Major, Minor, and Trace Element Compositions of Bulk Drill Core Samples from the Duluth Complex, Minnesota
Global Distribution of Selected Mines, Deposits, and Districts of Critical Minerals
USGS critical minerals review
Tellurium
Graphite
Beryllium
Barite (Barium)
Titanium
Zirconium and hafnium
Cobalt
Vanadium
Platinum-group elements
The platinum-group elements (PGEs)—platinum, palladium, rhodium, ruthenium, iridium, and osmium—are metals that have similar physical and chemical properties and tend to occur together in nature. PGEs are indispensable to many industrial applications but are mined in only a few places. The availability and accessibility of PGEs could be disrupted by economic, environmental, political, and social e