<P> Fumaroles emitting sulfurous vapors form surface deposits of sulfur - rich minerals; places in which these deposits have been mined include: </P> <Ul> <Li> Kawah Ijen and Arjuno - Welirang, Indonesia </Li> <Li> Purico Complex near San Pedro de Atacama in Chile </Li> <Li> Xingyang in Henan province, China </Li> <Li> Mt Tongariro in the central North Island, New Zealand </Li> <Li> White Island in the Bay of Plenty, New Zealand (mined from the 1880s to the 1930s) </Li> </Ul> <Li> Kawah Ijen and Arjuno - Welirang, Indonesia </Li> <Li> Purico Complex near San Pedro de Atacama in Chile </Li>

Fumaroles solfatara and mud pot can be classified as