Geosciences

• National Geophysical Data Center: The National Geophysical Data Center (NGDC) is the national repository for geophysical data, providing a wide range of science data services and information.
• RRUFF Project: an integrated database of Raman spectra, X-ray diffraction and chemistry data for minerals
• American Mineralogist Crystal Structure Database: 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.
• XRD Database of Minerals - x-ray diffraction data for minerals
• X-Ray Diffraction Analysis Database of Selected Soils and Sediments: database contains X-ray diffraction patterns and raw data  for 59 clay fractions for the southern U.S. 

Finding Mine Maps

Few libraries collect mine maps but state and federal agencies frequently do.

• National Mine Map Repository - This agency maintains copies of abandoned US mine maps. Their database is accessible via the Internet.
• Pennsylvania Department of Environmental Protection Mine Map Repositories (See also Pennsylvania Geology and Mining research guide.)
  
• West Virginia mine maps - This website has scanned images of mines in West Virginia.
• Kentucky Mine Mapping Information System
• Mine Plans Portal – British database of non-coal mine maps.
  

• Encyclopedia of the Earth: A web-based resource produced by the National Council for Science and the Environment.
• Earth Science World: Site has a large imagebank of geologic images, an interactive geologic time scale, and other resources.
• ATHENA: Mineralogy: Systematic lists, formulas and pictures of minerals.
• Earth Impact Database: Database of impact craters on Earth containing size and location information
• Mineral Gallery: A collection of mineral descriptions, images, and specimens. Includes searchable mineralogical data.
• Alphabetical Mineral Reference: Alphabetized mineral glossary.
• Links for Mineralogists: Annotated links to internet resources specific to mineralogy. Links separated into Knowledge, Tools, and Contact subsections.
• Mineralogy Database: 4,102 individual mineral species descriptions with links. Includes crystallography, X-Ray powder diffraction, chemical composition, physical and optical properties, Dana's New classification, Strunz classification, and alphabetical listings of mineral species.
• Online Fossil Museum: searchable and browseable collection with images.
• The Electronic Volcano: Maps, photographs, and full texts of dissertations on worldwide active volcanoes.
• The PaleoNet Pages: A system of listservers, Web pages, and FTP sites designed to enhance electronic communication among paleontologists.
• Marine Realms Information Bank : Database of information related to the geology of U.S. coastal and marine regions.
• Web Geological Time Machine: The Museum of Paleontology at the University of California at Berkeley provides a descriptive online exhibit to the earth's time periods.
  
• Earth Science Resources on the Web: The University of California at Berkeley Earth Science and Map Library's Internet resources. Provides links to the Earth Sciences, Planetary Sciences, Geography, Geophysics / Seismology, Climatology, and Oceanography.
  
• National Park Service's Tour of Park Geology: This site features images of geologic features and descriptions of the geology of specific parks.
  
• Dana's New Mineralogy: This is a classic work on mineralogy.  (See the CAT record to locate this book.)
• Geology.com
• Georesources and Africa