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Found this rock on old willage road, but have nice balls structure inside. Any sugestion or just old rock...

+1 vote

asked Mar 29, 2017 by mario (310 points)

1 Answer

0 votes
Where did you find it? Duluth, Minnesota is good enough. We don't need GPS coordinates. Thanks for posting it. It looks like quartz. The interior might be some sort of silica.
answered Mar 30, 2017 by Weasel (58,850 points)
Thank you for answer. Found on southern Serbia, sity Leskovac southern on old wilage road embankment of river stone,gravel. Also before rock  found on this road and two on river.