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An interactive reference guide to rocks, minerals, and gemstones.

Complete, up-to-date, mineral database containing 4,714 mineral species descriptions and comprehensive picture library of images. These data are linked to mineral tables by crystallography, chemical composition, physical and optical properties, Dana ...

The web

Geology and Earth Science current events, news, articles, dictionary, satellite images, career information, reference maps, and more.

Magnetite® Windows are constructed of a light-weight and flexible panel which seals magnetically and fits over the inside of your existing windows, resulting in lower energy costs and greatly reduced noise levels.

Dictionary.com - the largest and most trusted free online dictionary. Instantly look up accurate and extensive definitions and word meanings, and hear audio pronunciations.

Online Dictionary - Multiple dictionaries including: English dictionary, medical dictionary, legal dictionary, financial dictionary, computer dictionary, thesaurus, dictionary of acronyms and abbreviations, dictionary of idioms, thesaurus, Columbia e...

Explore the updated online encyclopedia from Encyclopaedia Britannica with hundreds of thousands of articles, biographies, videos, images, and web sites.

Information, activities, and lesson plans on rocks, minerals, and crystals designed for students and teachers.

Play educational games, watch PBS KIDS shows and find activities like coloring and music. PBS KIDS Games and Shows are research based and vetted by educators.