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A Trilobite posted an image in the group What is it? from the myFOSSIL app 3 years, 1 month ago
3 years, 1 month ago3 years, 1 month agoI know these are rocks-not fossils-but these are interesting and I want to know more about them. They were split from the same rock, and on the inside was a round ring that is rainbow colored. The ring is easier to see in direct sunlight. Do you know what kind of rock this is and why this happens, or is it just a weird coincidence?
These are called weather rinds, in some areas were research has been done you can tell how old the cobble is by the thickness of the rind ☺️
@chloe-geddes I looked up weathering rinds but I don’t see anything that looks like mine. Does that mean I have something else or just a special weather rind?
There is no one type of weather rind, they can be all different colours and degrees of differences. There are cobbles at a lake near me that are light tan on the outside and black in the center. I still think they’re a weather rind but it could be some funny business with iron
@chloe-geddes that’s very interesting, I’ve never heard of a rind stone before. It’s always fun to learn something new!
I would think that the rainbow ring is iron