American Mineralogist Crystal Structure Database
an interface to a crystal structure database that includes every structure published in both the American Mineralogist and The Canadian Mineralogist, European Journal of Mineralogy and Physics and Chemistry of Minerals, as well as selected datasets from other journals.

ATHENA-Mineralogy
Alphabetical and Systematic Mineral list according to Strunz classification, with chemical formulas. One may also search the database for mineral names (including varieties) and mineral formula for elements. (Pierre Perroud, Genève, Switzerland)

Atlas of Igneous and Metamorphic Rocks, Minerals and Textures
minerals and rocks in thin-sections. Atlas constructed to aid undergraduate instruction at the Geology Department of the University of North Carolina

Catalog Mineralov
This mineral database contains more than 1000 individual mineral species descriptions (in Russian) with mineral specimen images

Catalog of type specimen.
at the Musée de mineralogie, Ecole des mines, Paris. The catalog is searchable by authors, minerals, date of first publication, holotyps and by chemical formula.

Crystallography Open Database
search a database with crystallographic information like cell parameters, atom positions, etc.

Earth lab datasite
an educational resource allowing amateur geologists and students to investigate UK geology online, by the Natural History Museum, London.

GeoRef Information Services
The GeoRef database, established by the American Geological Institute in 1966, provides access to the geoscience literature of the world. The database contains over 2.6 million references to geoscience journal articles, books, maps, conference papers, reports and theses.

IMA Database of Mineral Properties
created and maintained by the RRUFF Project in partnership with the IMA

Mincryst
a crystal structure database for minerals and their structural analogues.

mindat.org
an online mineralogical reference and locality resource for collectors and mineralogy students worldwide

Mineral Data
thousands of pages with information, photos and spectra. This is the ever growing list of physical, chemical (more than 3650 minerals) and optical data (600 minerals), photos (more than 60,000 colour photos of around 1900 minerals, thin sections, more than 100 scanning electron microscope images of more than 50 minerals and transmission electron microscope images) and vibrational spectra of the minerals available in this database. The original spectra are available for selected minerals on request. Data are on the web only available as images of the spectra.

The Mineral Gallery
a database of minerals (including images) catalogued by name, class, interesting groupings and including a full text search.

Minerals by Name
Search minerals by name and get information from different database

Mineral Spectroscopy Server
provides information about color in minerals and access to data on Mineral Absorption Spectra in the visible and infrared regions of the spectrum and Raman spectra of minerals

Mineral Structures and Properties Data Base
a compilation of crystallographic and physical property data for most of the rock-forming minerals (Joe Smyth, University of Colorado)

MinMax Database
MinMax is a database of minerals and worldwide collecting locations. The main aspect is a online database of mineral sites including their location, the mineral list, mineral descriptions, collectors information, pictures, links, shows and more. Every page and area is available in english or german!

RAMAN database
Raman spectroscopy database at the university of Siena

RASMIN
Raman Spectra Database of Minerals and Inorganic Materials. Provides spectrum images in PDF format, wavenumber - intensity data in ASCII text, and mineral photos in JPEG format

SINCRIS software
software database for crystallography

Webmineral
Mineralogy Database containing more than 5,000 pages of mineral data. Mineral species descriptions linked to mineral tables by 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. (David A. Barthelmy)