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Is This An Egg?


DChalo

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Well, i was in this deep river that has marine fossils and i ran into a rock that had crystals in it. There was a chunk that fell off so i got a hammer and smashed it. On one part there is this crystal looking thing with egg shells surrounding it.

Is it an egg?

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NEED PICS PLEASE

With rocks in my head, and fossils in my heart....

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Looks like a geode to me.

-Dave

__________________________________________________

Geologists on the whole are inconsistent drivers. When a roadcut presents itself, they tend to lurch and weave. To them, the roadcut is a portal, a fragment of a regional story, a proscenium arch that leads their imaginations into the earth and through the surrounding terrain. - John McPhee

If I'm going to drive safely, I can't do geology. - John McPhee

Check out my Blog for more fossils I've found: http://viewsofthemahantango.blogspot.com/

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From the description i would have to agree the picture is too blurry for my eyes but geode make the most sense.

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Geode would help if we knew river state any more info

Galveston Island 32 miles long 2 miles wide 134 bars 23 liquor stores any questions?

Evolution is Chimp Change.

Life is not about waiting for the storm to pass; it's about learning to dance in the rain!

"I like to listen. I have learned a great deal from listening carefully. Most people never listen." Ernest Hemingway

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That looks like a geode to me, but they are sometimes called THUNDER EGGS. Too blurry to be certain, but what looks like eggshell might be an outer growth of agate.

Be true to the reality you create.

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If it came from the NSR, them it is a mud ball that hardened and crystals formed on the inside. You can find then quit a bit there.

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there are some extremely hard "mudstone" septaria/concretions at the NSR.

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Fossil eggs are really difficult to find in the fossil record. There are certainly some bird eggs known from the Cenozoic, but dinosaur eggs are only known from a few localities in North America. 90% of all fossil eggs ever collected from North America are one block away from my apartment, in the Museum of the Rockies - all collected from Montana. Eggs require a very specific environment of preservation, and because of their fragility and chemistry, are very rare. There are only a handful of localities outside Montana in the US where they are known to occur; I believe there are some eggshell fragments from Big Bend, but that's the only place in Texas from what I know.

Bobby

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