Collection of various USGS datasets ranging from regional geology, geochemical, geophysical, etc.

Provides access to geochemical and other rock sample data.

An integrated database of Raman spectra, X-ray diffraction and chemistry data for minerals

Database that includes every structure published in the American Mineralogist, The Canadian Mineralogist, European Journal of Mineralogy and Physics and Chemistry of Minerals, as well as selected datasets from other journals.

x-ray diffraction data for minerals.

Large mineral database including technical data, localities, and photographs.