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Salt
Links about the geology and history of this most intimate mineral and important commodity.
About Salt: The Most Intimate Mineral
Salt pervades the Earth and seas and, not least, our lives.
The Importance of Salt
A long page full of facts and history, part of the class notes to Geology 115 at the University of California at Davis, taught by Richard Cowen.
Glossary of Salt Structures
A very specialized, colorful resource by Carlos Cramez of Universidade Fernando Pessoa in Portugal.
Salt Caves of the Zagros, Iran
This PDF paper (600 KB) from the Slovenian journal Acta Carsologica has remarkable maps and photos from the salt karst of southern Iran, explored by a group of Czech cave maniacs.
The Salt Institute
This trade association has lots of homework-help information, plus position papers and news related to the industry.
The Salt March to Dandi
The career of Mahatma Gandhi turned on the politics of salt production. Emory University's Deepika Bahri recounts this milestone of postcolonial history.
The Salt Mines of Wieliczka, Poland, 1850
An entertaining historical account by tourist Eva March Tappan of this spectacular underground place.
Salzwelten Austria
Tours of the historic and prehistoric Austrian salt district are detailed in this Flash-centered site.
USGS Minerals Information: Salt
The U.S. Geological Survey keeps track of this commodity here; it also presents the informative Circular 9343, "The Material Flow of Salt."
Wieliczka Salt Mine
Many photos of and notes about this hugely popular attraction from the Akademickie Centrum Komputerowe Cyfronet.