Riebeckite is a type of amphibole mineral that is found in igneous or metamorphic rocks. Some synonyms for riebeckite include crocidolite, blue asbestos, and sodium iron silicate. Crocidolite is a type of asbestos that is known for its blue color, and it is classified as a major health hazard. Blue asbestos can cause lung cancer and other respiratory illnesses if inhaled. Sodium iron silicate is a mineral that is used in the production of ceramics and refractories. Riebeckite is named after the German mineralogist Emil Riebeck, who first described the mineral in 1888. This mineral has unique physical and chemical properties that make it useful in various applications.