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Opinions On This Rock


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Does anyone have an idea on what this is. It looks like a petrified organ to me. I'm located in Alberta by Grande Prairie. Close to a known dinosaur bone bed.

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Alberta does have geodes and it looks like you are close to British Columbia. British Columbia has thundereggs.  What you have has a little more filling then a typical geode, but less filling than a typical thunderegg.  So, I would say it is sort of a gradation between the two. Just be careful of picking anything like that up on public lands. I understand that is against the law up there.

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