LOOK at this material

[Ron Kelley]

This end scraper has the typical steep bevel on the working end.
It also has the typical fractures on the working end.
That lithic material is anything but typical: Does anyone know the lithic?

[painshill]

Where's it from Ron? It looks like crinoidal chert. I don't know how widely it occurs (not very, would be my guess), but the nearest source to you that I know of is in Eastern Illinois (Vermillion County).

[arrow719]

I have heard it called fossiliferous chert.

[Ron Kelley]

painshill wrote:

Where's it from Ron? It looks like crinoidal chert. I don't know how widely it occurs (not very, would be my guess), but the nearest source to you that I know of is in Eastern Illinois (Vermillion County).

  The sale was from Arkansas but the provenance was lost sad to say. Thanks for the info Roger.

[painshill]

[QUOTE]Ron Kelley wrote:

Where's it from Ron? It looks like crinoidal chert. I don't know how widely it occurs (not very, would be my guess), but the nearest source to you that I know of is in Eastern Illinois (Vermillion County).

The sale was from Arkansas but the providence was lost sad to say. Thanks for the info Roger.


I wrongly assumed you had found it.
The St. Joe limestone of the Ozark Plateaus in Northern Arkansas is crinoidal and contains fossiliferous chert nodules.

[Hoss]

Add some SiO2, along with heat and pressure and maybe another million years. This would be that.

[rockdigger]

[QUOTE]painshill wrote:

[quote=Ron Kelley post=117886]

Where's it from Ron? It looks like crinoidal chert. I don't know how widely it occurs (not very, would be my guess), but the nearest source to you that I know of is in Eastern Illinois (Vermillion County).

The sale was from Arkansas but the providence was lost sad to say. Thanks for the info Roger.

I wrongly assumed you had found it.
The St. Joe limestone of the Ozark Plateaus in Northern Arkansas is crinoidal and contains fossiliferous chert nodules.


Yep that's right in my neck of the woods. Really though, I find it more on the Missouri state line. I always liked it.

[Ron Kelley]

Here's a couple of microscope shots.

[Ron Kelley]

Hoss wrote:

Add some SiO2, along with heat and  pressure and maybe another million years. This would be that.

  Thanks Matt, It's easier to see what the Crinoids looked like in your fossil sample.

[chase]

Very cool lithic Ron.

[wmwallace]

Thanks for the learning experience guys, I have picked up a lot of lithic material in Ohio for the past 40 years, but this is a first and awesome!! Nice and unique stuff_Bill

[Ron Kelley]

I looked through my Arkansas end scrapers and found two more pieces of Crinoidal Chert.