Leaverites or Cool Rocks/Fossils?

[fernwood]

I find these often on my land in Central WI.
Have been told they are officially called spotted chalcedony.  The most recent glacier went through the Niagara Escarpment to the North and East.  When the glacier melted, these rocks and many other unique ones, were deposited on my land.  Many fossils, too.  

They can contain the remains of corals, snails, clams and other critters.  

Some have agate banding.  
Some have crystal formations. 
Many contain Oolites.   

Hardness varies, all depends.  Some specimens range from 4 to 7.  They have some soft matrix.  Others are mostly 6.5-7.  

A few of these are at the top of my list to slab and make cabs from.  Photos of those are on a computer I do not have internet access on.  

Just noticed that photo is a little blurry and washed out.  Sorry.  Colors are more vibrant than what I am seeing.  Quarter for size reference.

[rockjunquie]

I guess it would depend on what's inside.

[fernwood]

Mar 18, 2021 8:09:21 GMT -5 rockjunquie said:

I guess it would depend on what's inside.

Some appear to have features throughout.  

[greig]

I don't think these are from the Niagara escarpment which is mostly limestone. They very well could be glacial. Might be a conglomerate where the dents are the outlines of other rocks. However, they do look agate-y and slice might reveal more about them.

[lookatthat]

Try some and find out!

[fernwood]

Mar 18, 2021 9:02:33 GMT -5 greig said:

I don't think these are from the Niagara escarpment which is mostly limestone. They very well could be glacial. Might be a conglomerate where the dents are the outlines of other rocks. However, they do look agate-y and slice might reveal more about them.

The escarpment apparently does have some areas that are more solid.  At least that is what a local geologist told me.  

[Fossilman]

Cut cut cut!

[greig]

Maybe I spoke too soon. The portion of the escarpment that I know is from the Niagara Falls, up the Bruce Peninsula and includes Manitoulin island. However, it also extends into New York State and Wisconsin, where I have never been. Next weekend, I will be rockhounding near Niagara for crystals in dolostone/limestone.

[rmf]

fernwood as you knwo I am not afraid to state leaverite. However, as fossilman said cut cut cut. That is the only way to know what the inside looks like.

[stefan]

I live on the escarpment and I can clearly with no in certian terms tell you those are Not from the escarpment! I wish we had stuff like that. The escarpment is limestone. Lots of fossils, some interesting Dolomite and calcite features, and some chert nodules (some worthwhile, most garbage). Those look a lot like bubblegum agates! I would be more than willing to cut them up for you if you don't have a saw. They could also be highly weathered conglomerates (basically nature's ancient concrete). Either way I say CUT CUT CUT!!