Where is lodine found?

Answer 1

Iodine is rare in the solar system and Earth's crust ; however, iodide salts are often very soluble in water. Iodine occurs in slightly greater concentrations in seawater than in rocks, 0.05 vs. 0.04 ppm. Minerals containing iodine include caliche, found in Chile. The brown algae Laminaria and Fucus found in temperate zones of the Northern Hemisphere contain 0.028-0.454 dry weight percent of iodine. Aside from tungsten, iodine is the heaviest element to be essential in living organisms.