J. E Gray

• Geochemical data and sample locality maps for stream-sediment and heavy-mineral-concentrate samples, and mineralogical data of nonmagnetic, heavy-mineral-concentrate samples, collected near five cinnabar-stibnite mineral occurrences in the Kuskokwim River
• Geochemical results and sample locality map of the stream sediment and nonmagnetic, heavy-mineral-concentrate samples from the Iditarod quadrangle, Alaska
• Geologic framework and environmental geology of the Summitville, Colorado acid-sulfate mineral deposit
• Unconditional eternal security