Mineralogy Database, WebMineral

Data Center Description
Mineral data for individual species are linked to mineral tables by crystallography, crystal structures, X-Ray powder diffraction, chemical composition, physical and optical properties, Dana's New classification, Strunz classification, mineral specimen images, and alphabetical listings of mineral species. There also are extensive links to other external sources of mineral data and information.

Summary provided by http://webmineral.com/

Data Center URL
URL: http://webmineral.com/