This comprehensive geoscience database contains over 2.1 million records in mineralogy and crystallography, general mineralogy, mineralogy of silicates, and mineralogy of non-silicates. Records in the database refer to journal articles, books, maps, conference papers, reports, and theses, with over 60,000 additions annually. Geology of North America is covered from 1785 to the present, and geology of the world is covered from 1933 to the present. This database is produced by the American Geological Institute.