Mineralogical Society of America - Mineralogy, Petrology and Crystallography. Society for the advancement of mineralogy, crystallography, geochemistry, and petrology, and promotion of their uses in other sciences, industry, and the arts.
Amethyst Galleries'' Mineral Gallery. Amethyst Galleries'' Mineral Gallery describes more than 600 minerals, with thousands of images and specimens. The descriptions include searchable mineralogical data, plus other information of interest to students and rock hounds!