Author Topic: Cedar Rapids/Cedar River rock  (Read 2570 times)

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Offline paulc

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Cedar Rapids/Cedar River rock
« on: March 13, 2024, 10:02:48 pm »
So I am visiting family here in Cedar Rapids, spent some time walking along the river and I pulled 3 rocks that looked maybe knapable. 
These two seem to flake okay without having any tools except a random stone to strike with.  Anyone knap any rock from the Cedar River?

Thoughts on what i have?  I will take these two pieces home, and maybe look a bit some more tomorrow before flying out.  And is it legal to collect along Cedar River?

Thanks, Paul

Offline bjrogg

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Re: Cedar Rapids/Cedar River rock
« Reply #1 on: March 15, 2024, 12:43:06 pm »
Sorry I can’t answer any of your questions, but I think it looks very promising.

A hot cup of coffee and a beautiful sunrise

Offline Parnell

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Re: Cedar Rapids/Cedar River rock
« Reply #2 on: March 18, 2024, 06:06:13 pm »
Cool looking rock.  You make any progress on it? 

Offline paulc

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Re: Cedar Rapids/Cedar River rock
« Reply #3 on: March 22, 2024, 05:34:44 pm »
I was able to make sharp gravel out of the grey banded a mix of flake and shatter when I hit it.  Both are pretty hard so don't flake real well without a good strong wind-up...doesn't help the accuracy of my strikes!  Played a little with indirect but I have never been able to get any real success with indirect with quality stone so....I still have some pieces large enough to not put under foot just yet...I will continue to try and get some results with indirect.  Paul

Offline JackCrafty

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Re: Cedar Rapids/Cedar River rock
« Reply #4 on: April 02, 2024, 03:42:35 pm »
Looks like "man rock". Heat treat or get beat.
Any critter tastes good with enough butter on it.

Patrick Blank
Midland, Texas
Youtube: JackCrafty, Allergic Hobbit, Patrick Blank

Where's Rock? Public Waterways, Road Cuts, Landscape Supply, Knap-Ins.
How to Cook It?  200° for 24hrs then 275° to 500° for 4hrs (depending on type), Cool for 12hr

Offline TRACY

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Re: Cedar Rapids/Cedar River rock
« Reply #5 on: April 25, 2024, 02:02:13 pm »
Looks like it will need some heat but is still knappable!
It is what it is - make the most of it!    PN500956