Amethyst Galleries' Mineral Gallery
"Amethyst Galleries' Mineral Gallery is a large collection of mineral descriptions, images, and specimens ... together with several ways of accessing these descriptions."
Athena Mineralogy
"Here are mineral lists (IMA approved mineral names and varieties names) sorted either alphabetically or arranged systematically." Quite extensive.
Interactives: The Rock Cycle
"Site where students can learn all about rocks and geology, the science of rocks. They will learn how rocks can be identified, how they are formed, and how they change over time."
Mineralogy Database
Tons of information about mineralogy and specific minerals.
National Geophysical Data Center
Information includes Earth observations from space, natural hazards, solar weather and events, marine geology, geomagnetic data, and more.
Paleomap Project
"The goal of the PALEOMAP Project is to illustrate the plate tectonic development of the ocean basins and continents, as well as the changing distribution of land and sea during the past 1100 million years."
Regional Paleogeographic Views of Earth History
"This presentation uses a series of paleogeographic and plate-tectonic reconstructions to show the broad patterns of Phanerozoic Earth history. Organization is by region and in geologic order from oldest to youngest for each region."
UCMP: Geology Entrance
"The Geology Wing is organized according to the geologic time scale. Exploring this series of exhibits will take you on a journey through the history of the Earth, with stops at particular points in time to examine the fossil record and stratigraphy."