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  • Mineral and Gemstone Kingdom
    An interactive reference guide to rocks, minerals, and gemstones.
  • Web Mineral
    Complete, up-to-date, mineral database containing more than 4,400 mineral species descriptions and comprehensive picture library of images. These data are linked to mineral tables by crystallography, chemical composition, physical and optical properties, Dana classification, Strunz classification, mineral name origins, mineral locality information, and alphabetical listing of all known valid mineral species. There are extensive links to other sources of mineral data available on the WWW.
  • Ciencias de la Tierra
    Spanish directory of Earth Science links.
  • Mineralogy Database
    The web's most comprehensive and regularly updated mineralogy database with information on minerals from around the world and thousands of photos.
  • Volcano DB
    Browse all the currently known volcanoes with map locations and times of eruptions.
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