The Collaborative International Dictionary
Elaterite
Elaterite \El"a*ter*ite\, n. (Min.) A mineral resin, of a blackish brown color, occurring in soft, flexible masses; -- called also mineral caoutchouc, and elastic bitumen.
Wiktionary
elaterite
n. (context mineral English) The mineral wurtzilite.
Wikipedia
Elaterite
Elaterite, also known as Aeonite, 'elastic bitumen' or 'mineral caoutchouc'.
Elaterite is a brown hydrocarbon varying somewhat in consistency, being sometimes soft, elastic and sticky, like India rubber, and occasionally hard and brittle. It is usually dark brown in color and slightly translucent. A substance of similar physical character is found in the Coorong district of South Australia, and is hence termed coorongite. It is said to be carcinogenic.