USGS information on collecting rocks.
Eastern (USA) Minerals Resources
Gateway to information on minerals and mineral resources research in the eastern United States.
GeMin exhibition and online copipes of the Oryktologia NEA news.
Gemology & Gem Identification
Provides information on becoming a gemologist. Offers testing equipment, books, tutorials and courses.
Minerals of the United States
Click on the map to view pictures of minerals found in the chosen state.
Professor in the Department of Geology at Miami University, Oxford, OH. Includes information on Dr. Rakovan's research and teaching in mineralogy and geochemistry.
The Rock, Mineral, and Fossil Reference
Contains over 100 pictures of minerals, rocks and fossils, as well as information about classification, identification, the Science Olympiad Rocks and Minerals event and related topics.
High-resolution pictures of rocks and minerals, taken from personal collections, as well as the Calvin College Geology Department, Michigan, USA.