Volcanic Gases - OREGON STATE http://volcano.oregonstate.edu/book/export/html/151 gases http://volcano.oregonstate.edu/book/export/html/151 gases ercury is also produced by Kilauea http://volcano.oregonstate.edu/book/export/html/151 ercury is also produced by Kilauea lots of observations http://volcano.oregonstate.edu/book/export/html/151 ercury is also produced by Kilauea