🔎 UNIDENTIFIED It's extremely hard, broke all my tools. Light shines through and the parts that are fractured it extremely bright in the sun.

[SunnyYou]

 

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[pepperj]

Did you try a 12lb sledge hammer?

 

[pepperj]

Yes I did. I also used a hammer and chisel and a drilling kit and I totally destroyed it. Harder than 8. Thinking spinel?

So you destroyed the 12 lb sledgehammer.
It doesn't show impact marks.

 

[releventchair]

Try a vise.

Looks like the O.P. is already rockhounding / prospecting. Isn't that a bad enough vice?

 

[SunnyYou]

Did you try a 12lb sledge hammer?

Yes I did. I also used a hammer and chisel and a drilling kit and I totally destroyed it. Harder than 8. Thinking spinel?

 

[crashbandicoot]

View attachment 2032701 View attachment 2032702 View attachment 2032703 View attachment 2032705 View attachment 2032706

Don,t have the slightest. Where you found it might give someone a clue,general area.

 

[flinthunter]

Looks like quartz. What kind of tools did it break?

 

[traveller777]

Looks like quartz conglomerate to me, or at least some type conglomerate.

 

[traveller777]

I agree it's some kind of conglomerate. Any tips how to break it up without totally destroying it?

Rock saw. If you do not have one I would bet someone near you that does cabochons and/or members of a rock, gem, and mineral club have one. Google your area for clubs near you. They will be glad to work with you I am sure. Stop beating on it till you talk with them is my advise.

Good luck and let us know how it goes.

 

[Merf]

Periwinkle kryptonite

I would be very careful with that rock. Periwinkle kryptonite. A non-canonical variety. Exposure to periwinkle kryptonite causes Kryptonians to lose all their inhibitions.

 

[tamrock]

So you destroyed the 12 lb sledgehammer.
It doesn't show impact marks.

Maybe these are his tools. I'll bet I could turn that piece of common granite into dust with an 8lb sledgehammer.

 

[Zakon Krzyżacki]

Looks like regular old decaying granite.
Common in my area.
I am blessed to live near the center of the Michigan basin.
All the heavy stuff got dropped by the glaciers here.

 

[SunnyYou]

Don,t have the slightest. Where you found it might give someone a clue,general area.

Kern river, California.

 

[Lenrac2]

Welcome to TNet!

 

[SunnyYou]

Looks like quartz. What kind of tools did it break?

Harder than quartz. Rotary kit. Scratches quartz.

So you destroyed the 12 lb sledgehammer.
It doesn't show impact marks.

I didn't destroy the hammer, of course, but it didn't do anything to the specimen.

 

[SunnyYou]

Looks like quartz conglomerate to me, or at least some type conglomerate.

I agree it's some kind of conglomerate. Any tips how to break it up without totally destroying it?

 

[ticndig]

Quartz and granite , it's everywhere . I've never seen a rock that a sledge wouldn't crush.

 

[schreib69]

I have tried a magnet?
Does it appear molten / refrozen? possibly meteoric?
Almost everyone owns a grinder. I'll bet my grinder will go through it. Different blades available including diamond blades($40). I have used them for cutting block for retaining walls.
Please report in your results after using a grinder.

 

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[SunnyYou]

Welcome to TNet!

Thanks

 

[SunnyYou]

I don't know if this helps but this more grey bit on the side has some kind of greasy, waxiness to it. Does that help?