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Web Mineral - http://webmineral.com/
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. |
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Athena Mineralogy - http://un2sg4.unige.ch/athena/mineral/mineral.html
Systematic classification of minerals and searchable database. |
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http://www.mindat.org/ - http://www.mindat.org/
Searchable mineral database with physical and chemical properties as well as locality information. |
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Amethyst Galleries' Mineral Gallery - http://www.galleries.com/
Provides a searchable database of mineral and gemstone descriptions, images, and specimens. |
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Virtual Atlas of Opaque and Ore Minerals - http://www.smenet.org/opaque%2Dore/
Information about the identification and study of minerals. |