- Salt (MRBloch Archive) - A collection of material relating to salt [NaCl] and its influence on civilization. Includes sections on physiology, geology, archeology, palaeoclimatology, palaeogeography, production, religion, economics, and etymiology of salt.
- Neville R. Hill - A consultant for mining and minerals. He has been published on development of non-metallic rock and mineral resources and building materials production especially in developing countries.
- The Rock Gallery - Geological display of images and information including crystals, minerals and gems.
- Matt's World of Minerals - Site dedicated to the visual learning of Minerals and Geology, containing pictures and information on geology, minerals, and fossils. Also has links to shops, encyclopedias, and a mini-geology database.
- Bash Rox - Intended for collectors of minerals, rocks and fossils. Features specimen photos and location descriptions and photos, as well as identification guides and links.
- Eastern (USA) Minerals Resources - Gateway to information on minerals and mineral resources research in the eastern United States.
- Minerals of the United States - Click on the map to view pictures of minerals found in the chosen state.
- Perlite - Pictures, links, and a brief description of the properties and applications of this siliceous rock.
- GeMin Exhibition - GeMin exhibition and online copipes of the Oryktologia NEA news.
- Rakovan, John - 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.
- YupRocks - high-resolution pictures of rocks and minerals, taken from personal collections, as well as the Calvin College Geology Department, Michigan, USA.
- Collecting Rocks - USGS information on collecting rocks.
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