Rock: Mineral information, data and localities.

A rock is a naturally-occurring solid aggregate of one or more minerals, mineraloids or, in some cases, organic material. Sediments are the unconsolidated

Geologic Maps of the 50 United States

Geode, Crystals, Formation & Structure

Life Helps Make Almost Half of All Minerals

Common Minerals Overview, Uses & Examples - Video & Lesson

mindat.org – A Minerals Database – Inside Science Resources

Rocks guide – Field Studies Council

Platinum : Properties, Uses, Occurrence and Localities » Geology

Nevada Bureau of Mines and Geology

Acanthite: Mineral information, data and localities.

Billion-year-old rocks reveal traces of ancient life

20 Best Rock Identification Books of All Time - BookAuthority