Collecting Rocks
- USGS information on collecting rocks.
- http://pubs.usgs.gov/gip/collect1/collectgip.html

YupRocks
- high-resolution pictures of rocks and minerals, taken from personal collections, as well as the Calvin College Geology Department, Michigan, USA.
- http://www.yuprocks.com

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.
- http://www.users.muohio.edu/rakovajf/

GeMin Exhibition
- GeMin exhibition and online copipes of the Oryktologia NEA news.
- http://users.hol.gr/~minat/

Perlite
- Pictures, links, and a brief description of the properties and applications of this siliceous rock.
- http://www.perlite.net/

Minerals of the United States
- Click on the map to view pictures of minerals found in the chosen state.
- http://www.tigerminerals.com/

Eastern (USA) Minerals Resources
- Gateway to information on minerals and mineral resources research in the eastern United States.
- http://minerals.usgs.gov/east/

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.
- http://www.imbm.btinternet.co.uk/

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.
- http://www.salt.org.il/