ELATERITE  , also termed ELASTIC

BITUMEN and MINERAL CAOUTCxouc, a mineral hydrocarbon, which occurs at Castleton in Derbyshire, in the lead mines of Odin and elsewhere . It varies somewhat in consistency, being sometimes soft, elastic and sticky; often closely resembling india-rubber; and occasion-ally hard and brittle . It is usually dark brown in colour and slightly translucent . A substance of similar physical character is found in the Coorong district of South Australia, and is hence termed coorongite, but Prof . Ralph Tate considers this to be a vegetable product .