Virtual museum and searchable database of European painting and
sculpture of the Gothic, Renaissance, Baroque, Neoclassicism and
Romanticism periods (1100-1850).
Mineral data for individual species; crystallography,
crystal structures, X-Ray powder diffraction, chemical composition, physical
and optical properties, Dana's New classification, Strunz classification,
mineral specimen images, & alphabetically.
Database of chemical properties,
searchable by chemical name, formula, CAS no., structure, ion energetics,
vibrational & electronic spectra, and molecular weight (National
Institute of Standards and Technology)