Fire cracked rock

sunnysideup

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May 6, 2021
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Total newbie, but have found several points and flakes on a small piece of land I use for a garden. Doing some research on finding Indian campsites, and came across fire cracked rock as being a clue. I have found some pictures on here and google, but not much info. It got me thinking because I have found several rocks with reddish and black colorations in my garden plot like pictures I have found so far, but thought they were just naturally occurring. I will attach the pictures of the rocks I have, and would love some input. Would also love to see pictures of fire cracked rocks if anyone has any!
 

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Treasure_Hunter

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Sorry, I agree with newnan man, what you have posted are natural rocks, can you post the points?
 
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sunnysideup

sunnysideup

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Sorry, I agree with newnan man, what you have posted are natural rocks, can you post the points?
Thank you! I figured that as well, but the coloring threw me off. Here are the points (and possible points or flakes). Also, the last pic is a rock I found in the same spot that had a very flat and smooth side. Not sure if it’s an artifact, but I kept it anyway.
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Older The Better

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I can’t quite tell from your pictures but they look like they could be fire cracked rock, around here the sandstone that’s normally tan turns burgundy and the limestone gets kind of pink and a lot of times chalky
 
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sunnysideup

sunnysideup

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I can’t quite tell from your pictures but they look like they could be fire cracked rock, around here the sandstone that’s normally tan turns burgundy and the limestone gets kind of pink and a lot of times chalky
Thanks for the input! I have researched this, but it seems like everyone’s pictures of it are all so different so it’s hard for me to differentiate the difference between regular rocks and fire cracked ones. But the colors of these stood out to me like the fire cracked rocks I have found pictures of.
 

dirstscratcher

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It depends on the rock, but the FCR I've excavated from hearths generally have very jagged and irregular breaks. On the other hand, I excavated 25 pounds of limestone river rocks from a large roasting pit (photo attached) that had nary a crack. I doubt if very few people ever photograph FCR.
 

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sunnysideup

sunnysideup

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It depends on the rock, but the FCR I've excavated from hearths generally have very jagged and irregular breaks. On the other hand, I excavated 25 pounds of limestone river rocks from a large roasting pit (photo attached) that had nary a crack. I doubt if very few people ever photograph FCR.
That’s amazing. Yes, that’s what I figured. Thanks for the help!
 

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