Ore genesis and loses its metal carrying capacity. Ore deposits rarely fit neatly into the categories in which geologists wish to place them. Many may be formed by one or more of the basic genesis processes above, creating ambiguous classifications and much argument and conjecture. Often ore deposits are classified after examples of their type, for instance Broken Hill type lead-zinc-silver deposits or Carlin–type gold deposits. Classification of hydrothermal ore deposits is also achieved by classifying according to the temperature of formation, which roughly also correlates with particular mineralising fluids, mineral associations and structural styles. This scheme, proposed by Waldemar Lindgren (1933)
Galena, Alaska place along the Tanana and Yukon Rivers. The Galena high school boys' and girls' basketball teams were regional champions from 2004 to 2007. The boys' basketball team won the state championship in 2008. "Frostbite," a character from the G.I. Joe 3.5" action figure toy line, is from Galena. In Metal Gear Solid, the character of Colonel Campbell announces to Solid Snake that two F-16 fighter jets have been dispatched from Galena as part of a diversionary tactic. Galena, Alaska Galena () ("Notaalee Denh" in Koyukon) is a city in the Yukon-Koyukuk Census Area in the U.S. state of Alaska. At