🔎 UNIDENTIFIED New York Leverite?

muddyrover

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Jun 18, 2024
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Found this sitting in a crack in bedrock while fishing a creek in upstate New York.

I’m thinking blue calcite? Maybe a stalagmite from how the bottom looks? Also the bottom looks kind of like coral to me.

Has no affect on metal detector, magnet, or Geiger counter….
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looks like slag glass..... but some of those pix look like boulder opal too... hard to say, I wouldn't have leaverited it....
I thought slag glass or trinitite… that’s why I put the Geiger counter on it.

It seems like the bottom has fossils.

It’s not translucent with a flashlight, so I would guess not calcite now. The top seems glass-like. Maybe it is slag glass or glass from a fire.


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Parts look like gypsum is present, definitely indicating it’s a sedimentary stone similar to travertine. I would guess marble in this case. Put some HCL on it and watch it fizz to confirm presence of calcium.
 

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A large cave network is part of a tributary upstream with underground boat rides.

No smelting history around here.

Hurricane Irene moved lots of dirt and rock in 2011. Complete houses were washed downstream .

I’ll see if we have anything made up of HCl.
 

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My best guess would be an agate. It looks like the host rock was broken up (brecciated) and filled in with hydrothermal fluids that solidified into that beautiful rock. The back side doesn't look like fossils to me, but it does look like some softer parts of the rock were eroded out. Just based on the blocky shape of the holes in it.

This is an Ellensburg blue agate from our area. Your specimen made me think of these.
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Great find!!
 

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I don't believe it's slag (either stone), but rather it's something that formed a long, long time ago. Good eye Laura... :icon_thumright:
 

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I sort of reminds me of this chert I slabbed from Henry Co IA. It has those knobby things on one side. This came from a modern limestone quarry. I never could figure whether those knobs were the top or the bottom. If it was mine it would go in the rock saw without hesitation.😎
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I sort of reminds me of this chert I slabbed from Henry Co IA. It has those knobby things on one side. This came from a modern limestone quarry. I never could figure whether those knobs were the top or the bottom. If it was mine it would go in the rock saw without hesitation.😎View attachment 2169690View attachment 2169691
Always thought it an odd name for such a gorgeous rock- Chert! Geology is fascinating in how everything plays a part in creating beautiful specimens. Thanks for sharing Toddspoint
 

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The color and luster also reminds me of the chert pieces I find here in western ny. Never seen a piece this blue looking though. Usually has more of a grayish color to it.
 

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