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Iodite is a mineral that is a member of the apatite group. Its chemical formula is Ca5(PO4)3I. It is a relatively rare mineral, found in some igneous and metamorphic rocks. It can also occur in hydrothermal veins. Iodite typically appears as small, prismatic crystals. The color of iodite can vary from colorless to pale yellow or white. It has a vitreous luster and a hardness of 5 on the Mohs scale. The specific gravity of iodite is around 3.15. Iodite is an iodine-bearing calcium phosphate mineral. It is structurally similar to other apatite minerals like fluorapatite and chlorapatite, which contain fluorine and chlorine respectively. The presence of iodine distinguishes iodite from these related minerals. Iodite is not considered an economically important mineral, and it does not have significant industrial applications. Its primary relevance is in mineralogy and geological studies. Notable occurrences of iodite have been reported in various locations worldwide, including parts of the United States, Canada, and Europe. The formation of iodite is often associated with environments where there is a source of calcium, phosphate, and iodine.