Glossary of Karst and Cave Terms
Based on "A Lexicon of Cave and Karst Terminology with Special to Environmental Karst Hydrology" EPA/600/R-02/003, 2002, EPA: Washington, DC., Speleogenesis Glossary includes 2699 cave & karst terms
Minerals that are composed of one or more metals combined with sulphur. The most common is pyrite. They are believed to be produced by the metabolic action of micro-organisms, and are found in many sedimentary rocks, usually in trace amounts.