Hello CMS folks,  I am searching for vanadium-enriched clays (illite and chlorite), preferably isolated, to serve as reference minerals in upcoming XANES (X-ray adsorption near edge spectroscopy) experiments. The experiments are non-destructive so I would be able to return the samples back to you after analysis.  If you have any material that I might be able to borrow, please send me an email here, [m.rebecca.stokes@gmail.com](mailto:m.rebecca.stokes@gmail.com) or [mstokes@usgs.gov](mailto:mstokes@usgs.gov).  Thank you for your time and consideration! Rebecca Stokes USGS