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Author Topic: Quartzite??? Otherwise known as ManRock  (Read 11361 times)

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Offline D. Tiller

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Re: Quartzite??? Otherwise known as ManRock
« Reply #30 on: April 15, 2009, 07:55:57 pm »
I think its a fine chert. Maybe a little heat at the classic will make it knapp nice. Bring a pickup full and lets find out!  ;)
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Offline Hillbilly

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Re: Quartzite??? Otherwise known as ManRock
« Reply #31 on: April 15, 2009, 08:06:47 pm »
Eddie, coral is a fossil itself. There is silicified coral found all through the midwest, but I don't think it's knapping grade?-They use it a lot for jewelry and stuff. The Petrosky stones from Michigan are fossilized coral, and there's similar stuff in West Virginia and a bunch of fossil coral around Louisville, KY. More rockhound than knapper material, though, I think.
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Offline El Destructo

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Re: Quartzite??? Otherwise known as ManRock
« Reply #32 on: April 15, 2009, 10:15:04 pm »
Boy....you are trying to become a Honorary Yooper aintcha???...... Petoskey stone is a fossilized coral..... the state stone of Michigan and is commonly found along the shores of Lake Michigan and Lake Huron in the United States.

It was formed by the fossilization of ancient coral called hexagonaria...... These corals lived in warm shallow seas that covered Michigan during Devonian time, some 350 million years ago.



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Offline DanaM

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Re: Quartzite??? Otherwise known as ManRock
« Reply #33 on: April 16, 2009, 08:44:50 am »
Petosky Stone don't knap, I tried :(
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