Topic Web site and use
Mineralogical society Mineralogical Society of America. The premier mineralogical society in the U.S.
Economic geology Infomine. Mining news, prospects, science, economics, processes.
Mineralogy databases

Mineralogy Database. An extensive database of mineral properties, chemistry, pictures, sorted lists, and symmetry animations.

Athena Mineralogy. A mineralogy database emphasizing a comprehensive list with pictures.

Mineralogy and petrology links. Includes thin section photos, software, geochemistry, and more.

Mindat. Pictures of many, many minerals from localities around the world.

Mineral spectra and color Mineral Spectroscopy. A mineral spectra database, which includes actual spectra and the origin of color in minerals.
Optical mineralogy

Microscopy and minerals images. Mineral optics and a wide array of images from igneous, metamorphic, and sedimentary rocks.

Optical Mineralogy. Mineral optics and optical properties, and how to get them.

Crystal structures

Visualization of isometric crystal face forms, and of simple solid shapes

Rotating animations of crystal faces, all crystal classes

Crystal structure rotating animations

Edenite crystal structure model.

Staurolite crystal structure model.

Polymorf Knowhere. Basic mineral symmetry, packing, and coordination of ions.

Mineral Web. A database of mineral atomic structure animations.

Crystal symmetry groups. A different explanation of symmetry elements and symmetry groups.

X-ray diffraction

Introduction to X-ray powder diffraction. USGS training site for powder diffraction, theory and practice.

Bragg's Law and Diffraction. Explanation of Bragg's law with controllable animation to show how diffracted waves go in and out of phase with wavelength, lattice spacing, and 2Θ angle.

Scanning electron microscopy

Introduction to scanning electron microscopes. Michigan State University.

Energy dispersive X-ray analysis. Arizona State University.

Miscellaneous Phase diagrams for igneous silicate systems.