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Amethyst Galleries' Mineral Gallery - A constantly growing database of mineral descriptions, images, and specimens, together with several ways of accessing these descriptions.Web Mineral - Extensive mineral database containing 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. Athena Mineralogy - Systematic classification of minerals and searchable database. Mineral Spectroscopy - Information about color in minerals and the spectroscopy of minerals (mineral absorption spectra). Mindat - Searchable mineral database with physical and chemical properties as well as locality information. Virtual Atlas of Opaque and Ore Minerals - Information about the identification and study of minerals.
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