Click on the map to view pictures of minerals found in the chosen state.

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.

Pictures, links, and a brief description of the properties and applications of this siliceous rock.

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.

high-resolution pictures of rocks and minerals, taken from personal collections, as well as the Calvin College Geology Department, Michigan, USA.