<Tr> <Td_colspan="2"> Fibrous tremolite asbestos on muscovite </Td> </Tr> <Tr> <Th_colspan="2"> General </Th> </Tr> <Tr> <Th> Category </Th> <Td> Silicate minerals </Td> </Tr> <Tr> <Th> Strunz classification </Th> <Td> 09. ED. 15 </Td> </Tr>

How many types of asbestos were commonly used in the uk