🔎 UNIDENTIFIED Help identifying rock

[67GTA]

Found this while detecting in south central Kentucky. VDI is 25-30 on Deus and 1-2 on the Equinox. That is generally gold range. There isn't any glacial gold in this area. It is very light and porous kind of like pumice. If you turn it just right it has a silvery glint. Any ideas?

 

Amazon Forum Fav 👍

A Handbook of Civil War Bullets and Cartridges - Grab it through Amazon!

[traveller777]

Found this while detecting in south central Kentucky. VDI is 25-30 on Deus and 1-2 on the Equinox. That is generally gold range. There isn't any glacial gold in this area. It is very light and porous kind of like pumice. If you turn it just right it has a silvery glint. Any ideas?View attachment 2017868View attachment 2017867

Somebody much more knowledgeable than me likely will help, but time it looks like Slag. Was there a smelting operation of some sort around?

Thanks for sharing find.

 

[Back-of-the-boat]

Maybe some type of coke from a forge or foundrey.

 

[traveller777]

Maybe some type of coke.

I prefer diet Dr pepper

 

[NJearthman]

Could be scoria

Scoria: Igneous Rock - Pictures, Definition & More

Scoria is a dark colored, extrusive igneous rock with a vesicular texture.

geology.com

If so probably transported there from somewhere else

 

[67GTA]

I don't think there was. It was in an open field with very few signals next to a mid 1800's homesite.

I prefer diet Dr pepper

Has to be regular Dr Pepper

 

[67GTA]

It is very similar to scoria or basalt, but the vesicles are tiny. Reminds me of the pumice type rocks in gas fireplaces/grills. It's possible it was from the old homesite. It was lived in until the 70's before it was torn down. I've read that extruded type rocks can contain magnesium. Would that be a low conductor on a metal detector? Don't have any magnesium to test.

 

[traveller777]

I don't think there was. It was in an open field with very few signals next to a mid 1800's homesite.

Has to be regular Dr Pepper

Nope diet. I used to make the fructose that goes in those things. No thank you.

 

[67GTA]

I can appreciate that. I ran a milk route for 20 years. There are a lot of restaurants I quit eating at after seeing the kitchens.

 

[money mike]

Found this while detecting in south central Kentucky. VDI is 25-30 on Deus and 1-2 on the Equinox. That is generally gold range. There isn't any glacial gold in this area. It is very light and porous kind of like pumice. If you turn it just right it has a silvery glint. Any ideas?View attachment 2017868View attachment 2017867

im in Kentucky as well and Ive uneathed a light weight black stone with shiny silvery sparklkes too. Im not sure what it is but I bet there is alot in Kentucky

 

[Kray Gelder]

No surface volcanic deposits in Kentucky. There are intrusive dikes, but they wouldn't produce a rock like that. What Kentucky does have is coal, and coal power plants. I think maybe a coal clinker, which will be found by detectors, with varying VDI numbers.