UK Governmnet ban in 1985. Industry voluntary ban 1972.
Crocidolite is also known as blue asbestos. It is a type of asbestos mineral that is characterized by its blue color.
The silicified variety of crocidolite is called tiger's eye. Tiger's eye is a metamorphic rock with a distinctive golden to red-brown color and a chatoyant luster, caused by fibers of crocidolite becoming replaced by quartz during the process of silicification.
Asbestos is a naturally occurring mineral fiber that is composed of six types of fibrous minerals: chrysotile, amosite, crocidolite, tremolite, anthophyllite, and actinolite. Chrysotile, amosite, and crocidolite are the most commonly used types of asbestos.
The three main kinds of asbestos that have been used commercially are Amosite, Crocidolite, and Anthophilite.
Chrysotile asbestos (White) is a Serpentine, Amosite (Grunerite) (Brown asbestos, and Crocidolite (Blue) are Amphiboles
Asbestos is composed of non biodegradable minerals including chrysotile, crocidolite, and amosite. So, Asbestos is non-biodegradable and it is toxic.
Tiger's eye is formed through a process known as pseudomorphism, where silica replaces crocidolite (blue asbestos) fibers in the rock. This replacement process happens over many years due to the alteration of mineral deposits. The distinctive golden-brown color and chatoyancy of tiger's eye are a result of the fibrous nature of the crocidolite being replaced by quartz.
Tiger's Eye is a form of quartz, a pseudomorph of the mineral crocidolite.
No, not all asbestos minerals are equally harmful. The most widely recognized and dangerous forms of asbestos are crocidolite, amosite, and chrysotile. Crocidolite and amosite are considered the most hazardous due to their needle-like structure, which can easily become embedded in lung tissue. Chrysotile, while less dangerous than the other two, can still pose health risks when fibers are inhaled over extended periods.
K. O Bennington has written: 'Thermodynamic data on the amphibole asbestos minerals amosite and crocidolite' -- subject(s): Asbestos, Thermodynamics, Riebeckite
Getting banned is BAD. don't ever try to get banned. If you get banned three times YOU ARE BANNED FOREVER!
No, a tiger's eye rock is not a sedimentary rock. It is a metamorphic rock that forms when minerals replace the original fibers in crocidolite, a blue asbestos mineral.