What kind of mineral is this ?

[Salvatore]

Was curious if someone knew what kind of mineral this was.Has a very smooth surface and multiple colors through out the piece.Is it a single mineral or several together? Very cube like in shape and it looks very nonporous of a type of mineral very concentrated in form.

 

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[DDancer]

Looks like a bit of butterscotch and red jasper. Cubit shape does not suggest anything else to me as that may just be how it chipped out and it appears to be water worn.

 

[Eu_citzen]

I'm actually thinking feldspar. Zoom in on the first pic - looks like cleavage.

 

[Backwoodsbob]

Very nice stone Sal. Look closely at it.

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[DDancer]

Sorry I dont see any of the plane that a feldspar would show. Even for a water worn feldspar. Granted its somewhat angular but one can get the same angles knapping jaspers.

 

[Moesia]

Hydrothermally absorbed/altered rock, there appears to be some jasper in it, but you need to take a picture in better lighting to be sure. It is not uncommon.

 

[Eu_citzen]

Sorry I dont see any of the plane that a feldspar would show. Even for a water worn feldspar. Granted its somewhat angular but one can get the same angles knapping jaspers.

Might be right, I have a lively imagination.
I however do not think the luster looks jasper-ish. The second pic looks like a freshly exposed surface.

 

[Salvatore]

Here's two more photos

 

[Moesia]

This is much better. It is hydrothermally altered rock and is not one mineral but a collection of minerals fused together. From the pictures i can see that it has spent some time in water but has retained its cubic shape typical of weathered granitoids (igneous rock). This kind of rock typically forms when hot fluids percolate thru it by a system of small cracks in it (you can see the marks it left in the second picture on the bottom of the rock). Brown is from the iron in it, green is from the new minerals replacing the old ones and the little rounded enclaves of darker color are what has survived the hot fluids and what is left of the original rock.

Hope this helps.

 

[Eu_citzen]

With the new (much better) images, I'd say Moesia nailed it.