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 processing is not completely known and further research into their mechanisms is being performed. Depressants and activators are used to selectively separate one mineral from another. Depressants inhibit the flotation of one mineral or minerals while activators enable the flotation of others. Examples of these include CN, used to depress all sulfides but galena and this depressant is believed to operate by changing the solubility of chemisorbed and physisorbed collectors on sulfides. This theory originates from Russia. An example of an activator is Cu ions, used for the flotation of sphalerite. There are a number of cells able to be used