Multimedia

Frame from a short video is of a post laser ablation crater using a nanosecond 193nm laser ablation system of a glass slide using a 210 micron spot diameter and 250 shots.  It shows a flat bottom crater indicative of a homogenized laser beam, though the measured diameter of the crater appears to be 25 microns smaller the diameter set.  The 3D crater image

This infographic introduces an approach that could subsequently be used to prioritize environmental research for the full range of critical elements.

Pie chart showing relative amounts of copper produced by leading copper producing states in the U.S. in 2019 (derived from data in Flanagan, D.M., 2019, Copper, in Metals and minerals: U.S. Geological Survey Minerals Yearbook 2019, v. 1, p. 20.1-20.30.

Global map showing locations of porphyry copper deposits from John, D.A., Ayuso, R.A., Barton, M.D., Blakely, R.J., Bodnar, R.J., Dilles, J.H., Gray, Floyd, Graybeal, F.T., Mars, J.C., McPhee, D.K., Seal, R.R., Taylor, R.D., and Vikre, P.G., 2010, Porphyry copper deposit model, chap. B of Mineral deposit models for resource assessment: U.S.

Photograph of Ray Copper Mine, Arizona, taken by USGS Emeritus Mark Coker, September 1, 2007. Revised for USGS Webpage carousel for brightness, sharpness, contrast, color saturation, and cropping.

Map showing locations of copper producing mines in the Lower Colorado River Basin, produced by Eric Anderson of the Geology, Geophysics, and Geochemistry Science Center on August 19, 2024.