Galena Summit The Galena Lodge (in historic Galena) is at , on the Ketchum side of the summit, and hosts cross country skiing. Collegiate alpine ski races were held on the summit in late 1947, due to a lack of snow at Sun Valley, and supplies were dropped in by airplane. The Ore-Ida Women's Challenge bicycle race (1984–2002) had a stage that crested the summit. Galena is a mineral, lead sulfide, an important lead ore; deposits of galena often contain silver. Galena Summit Galena Summit is a high mountain pass in the western United States in central Idaho, at an elevation of
Mineral hydration Mineral hydration Mineral hydration is an inorganic chemical reaction where water is added to the crystal structure of a mineral, usually creating a new mineral, usually called a "hydrate". In geological terms, the process of mineral hydration is known as "retrograde alteration" and is a process occurring in retrograde metamorphism. It commonly accompanies metasomatism and is often a feature of wall rock alteration around ore bodies. Hydration of minerals occurs generally in concert with hydrothermal circulation which may be driven by tectonic or igneous activity. There are two main ways in which minerals hydrate. One is conversion of an oxide