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Rock identification

0 votes

Hi! About a year ago i found this weird rock. It's non magnetic and the holes in it goes straight through.


asked Oct 7, 2018 by rockinsweden (120 points)

2 Answers

0 votes
Your rock looks like it has a host rock. In other words the inner rock looks to have formed inside an outer rock formation. You have porous rock into which a mineral solution leaks. It solidifies into a crystal or a simple silica like chalcedony... Does the exposed inner rock have a waxy feel. Real smooth?
answered Oct 9, 2018 by Weasel (58,160 points)
0 votes
It certainly has the appearance of flint or chert. Can you please post some pictures?
answered Oct 18, 2018 by hershel (51,840 points)