I found a weird Rock help please

[vinnylion]

Hi,

I found this rock near a wild lake 50 km far in the wood. No humain activities at all there.

I kicked the rock so i noticed it was heavy weight for is size. So i took it and smashed a small piece. I see inside was really shinning silver color.

So i smashed in 2 part and the inside is really really shinning, Silver Metal color. If i touch the inside rock i have a kind of silver dust on my finger.

We do not see the shine on the photo but in real the silver color part really really shine , i never seen a rock like that.

CLICK PICTURE TO ENLARGE

Someone can help ? Thank you for your time

 

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[arizau]

This may be what it is. https://www.google.com/webhp?source...B_enUS491US513&ion=1&espv=2&ie=UTF-8#q=schist

 

[austin]

Think it's petrified wood where mineral replacement has taken place inside.