Glowing green rocks in my back yard?

a few months ago i woke up and found a very large (boulder like) rock in my back yard glowing a bright green it was not hot but burned to the touch (i could not feel any radiant heat) when hit with a stick it oozed a grey mercury like substance and made a very loud rumbling sound when i came home from work that day the rock was in a different spot (the ooze was where it was originally) my neighbors say its an eye sore and ravers and hippies keep f'in around in my lawn how should i go about getting rid of it?