American Mineralogist
Crystal Structure database. Comprehensive
crystal structure database covering every structure published in "The
American Mineralogist", "The Canadian Mineralogist" and the
"European Journal of Mineralogy"
Athena Mineralogy. Searchable
database of minerals, many with photographs of specimens.
The British Geological
Survey Lexicon of Named Rock Units. Searchable
database of information on British rock units.
The Commonground Database. Free database of rock and mineral data from the Colorado
School of Mines. (limited access)
Cornell's Digital Earth. Hosted by Cornell University's Institute for the Study of the Continents, this site includes an interactive, digital map of the world that allows users to retrieve & analyze information from a compilation of geological data about the Earth's surface and interior.
Mineralogy Database.
Site contains mineral data with
information on all known mineral species with photos of some; browse the
database by crystallography, chemical composition, physical and optical
properties, New Dana classification, Strunz classification, & alphabetical
listings.
Minerals Yearbook. This annual USGS publication cover three broad areas in mineral and materials industries: Metals and Minerals, and Area Studies - Both Domestic and International.