Sphalerite is the chief ore of zinc. It consists largely of zinc sulfide in crystalline form but almost always contains variable iron. When iron content is high it is an opaque black variety, marmatite. It is usually found in association with galena, pyrite, and other sulfides along with calcite, dolomite, and fluorite. Miners have also been known to refer to sphalerite as zinc blende, black-jack, and ruby jack.
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🐠🦀🐠SMOKERSSuperheated water laden with metals like iron, copper, and zinc sulfide builds up towering chimneys in an image taken in the Western Pacific Ocean's Mariana Arc region. These towers are about 30 feet (9 meters) tall🐠🦀🐠