The California Institute of Technology created this website to provide valuable information about the color in minerals and data on mineral absorption spectra and Raman spectra. The modest site features additional information on silica polymorphs, desert varnish, ametrine, and manganese dendrite. Students can discover the technology used to collect the spectra data including the diode-array...

Mindat.org is described as one of the largest mineral database on the Internet with holdings that include over 11,000 minerals and information on over 100,000 mineral occurrences worldwide from over 23,000 sites. Visitors can search the archive using a mineral name or locality, and can browse common search topics or the newest entries. Once found, the pages contain a wealth of information about...

John A. Jaszczak at Michigan Technological University presents the characteristics of graphite at this website. Students can find concise descriptions and helpful images about graphite properties, spirals, and structures. The website offers images and descriptions of graphite found all over the world. Using Macromedia Flash Player, students can observe graphite levitating due to its diamagnetic...

Created by petroleum geology consultant David Barthelmy, the Mineralogy Database Web site reportedly contains 4,281 individual minerals and descriptions. Visitors can browse the minerals by crystal system, by x-ray powder diffraction properties, by chemical composition, by the Dana system or the Strunz system, by physical and optical properties, alphabetically, and by mineral pictures. The large...