Robuta

https://www.usgs.gov/data/microanalysis-samples-coles-hill-uranium-deposit-pittsylvania-county-virginia-usa Microanalysis of samples from the Coles Hill Uranium Deposit, Pittsylvania County, Virginia, USA |... These data are microanalyses of 22 polished thin sections that were examined using a scanning electron microscope (SEM) equipped with an energy dispersive... coles hill uranium deposit