Crocidolite, commonly known as blue asbestos, is a naturally occurring mineral that belongs to the amphibole group of silicate minerals. It is characterized by its blue color and fibrous structure, which makes it highly heat-resistant. Crocidolite was once widely used in construction materials, insulation, and various industrial applications due to its durability and fire-resistant properties. However, crocidolite is now recognized as a hazardous material. Inhalation of its fine fibers can lead to serious health issues, including lung diseases such as asbestosis and mesothelioma. As a result, the use of crocidolite has been banned or heavily regulated in many countries to protect public health.