I came across this youtube video where the subject rocks are shown. The guy on the video claims that the sound is due to the high amount of Iron in them, which Wikipedia says its not.
Here is the wikipedia link.
I can find plenty of geological references as to how these rocks formed. But I am not able to understand what gives these rocks the “ringing ability”. Wikipedia claims “Despite the broad public interest in the ringing ability of the ringing rocks there has not been any actual scientific studies to identify the source of the phenomenon.”
Is that true ?