Carbonate-hosted lead-zinc ore deposits and pyrite thus form. Commonly MVT deposits form by the combination of hydrocarbon pyrolysis liberating zinc-lead ions and sulfur to form an acidic solution which dissolves the host carbonate formation and replaces it with massive sulfide accumulations. This may also take the morphology of fault-hosted stockworks, massive tabular replacements and so forth. Porous limestones may form disseminated ores, however most MVT deposits are massive sulfides with knife-like margins between carbonate and sulfide mineralogies. Ore minerals in carbonate replacement deposits are typically lead sulfide, galena, and zinc sulfide sphalerite. Weathered equivalents form anglesite, cerussite, smithsonite, hydrozincite and secondary galena and sphalerite
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