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john h dalton

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Not eggs, these look more like some sort of concretions to me. No egg shell, no consistent shape and size.

Franz Bernhard

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Concretion forms by migration of soluble (mobile) material within sediments. Typically a small percentage of these will have formed around a fossil.

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Septarian concretions, at a first and second look

Edited by abyssunder

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Well I found what was supposed to be petrified eggs on the internet and what I have looks almost identical to some I seen. When I shine a black light on them the inside shine light pink where the surroundings are dark purple.  Dont know what that means but does seem odd. I've tried to take a picture and video but it comes out all the same color. 

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1 hour ago, john h dalton said:

on the internet

I'd use some caution there. Some weird stuff ends up in that net.

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The post above will help more than Google will.

Fin Lover

image.png.e69a5608098eeb4cd7d1fc5feb4dad1e.png image.png.e6c66193c1b85b1b775526eb958f72df.png image.png.65903ff624a908a6c80f4d36d6ff8260.png

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8 hours ago, john h dalton said:

When I shine a black light on them the inside shine light pink where the surroundings are dark purple.  Dont know what that means but does seem odd. I've tried to take a picture and video but it comes out all the same color. 

Characteristic of septarian concretions, here's an image I found that shows one under UV light.

image.png.9ec2348a1075f86149cf650e3a144b67.png

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14 hours ago, Troodon said:

May I ask where these were found state and county.

I found these in northwest Wyoming in the Morrison formation 

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