Mineralogy is an earth science focused on the chemistry, crystal structure, and physical properties of minerals. It may also be considered the branch of geology that studies minerals, their structure, properties, and ways in which one can be distinguished from another.
Regular Websites
International society for persons working in the mineral sciences, for the advancement of mineralogy and its application to crystallography, geochemistry, petrology, environmental science and economic geology. Offers support through meetings and the publication of books, journals and monographs. - Mineralogical Society
http://www.minersoc.org/
Maintained by the Rare-Earth Magnetics Association, this site provides general information about the science and technologies related to the production of rare-earth magnets, as well as a guide to industry corporations and associations, and safety guidelines for handling rare-earth magnets. - Rare-Earth Magnetics
http://www.rareearth.org/