Is this an agate?

[NorILdigcollector]

Found in northern Illinois in a field.

 

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[blauer]

Chalcedony (Var: Agate)

Picture of the day today.

 

[ToddsPoint]

I see a small amount of banding. I think it could be. From N IL it would be glacial till material brought down from Canada. Agate is rare in the till around here but it exists. I’m in Central IL and hunt the till a lot. I’ve only found one agate in 40 yrs of hunting. Here’s a pic. Cut a slab with a diamond saw and see what it looks like.

 

[Blackfoot58]

Definitely chert family. Looks like jasper with some translucency mixed in: chalcedony and/or agate.
I bet it will be gorgeous once slabbed.

 

[NorILdigcollector]

Well I finally cut and polished one half of it. It looks like some type of fractured chert or jasper. There really isn't any clear banding.

It reminds me of a pink nodule I found in the same field about a year ago.

 

[Blackfoot58]

Very nice. I am a fan of jasper. There are so many variations of color, swirls, etc.

 

[ToddsPoint]

Those are both really nice. You never know what you’ll find in the glacial till.