Glowing rock ( briefly) after Uv exposure

[Daprezident661]

I'm not sure what kind of rock it is but it has a bunch of diamond like crystals inside of it .. The rock is real Heavy and hard to break.. The outer surface of the rock is smooth and shinny with a oily like feel and the inside of the rock is rough with many diamond like crystals ... O and when put under a UV light it glows for a moment after turning off light, like a fluorescent paint. View attachment 1101916 View attachment 1101919 View attachment 1101920 View attachment 1101922 View attachment 1101923

 

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[Daprezident661]

 

[Daprezident661]

 

[Daprezident661]

 

[Eu_citzen]

Granitoid? The florescence might be scheelite which can occur in granitoids.

 

[Mr.T]

Hey Eu-it's a family forum!

Only joking. Never heard of what you just said!
Cool.

 

[Jim in Idaho]

What color does it show? Also, which frequency of UV light...LW, or SW?
Jim

 

[Daprezident661]

It's a lot harder than granitoid and the pieces of rock break off completely different granitoid crumbles the other one remains hard in A solid piece. I have granitoid this is a picture of one of them right? View attachment 1109321 and this is a different view of the the rock

 

[Eu_citzen]

Granitoid is a unspecific name for granite-similar rocks. Hardness is usually around 7 on Mohs scale.