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The Natural Philosopher[_2_]

On 23/02/17 11:02, wrote:
On Thu, 23 Feb 2017 10:21:51 +0000, The Natural Philosopher
wrote:

It does stain.

shouldn't do. If its actually granite

Marble stains...

I've never had a granite worktop stain tho

Isn't this a fine line in the difference between porosity and
permeability?

No. igneous rocks don't have voids. Permeability implies porosity.

The only voids you are likely to see in granite is where uranium has
decayed to radon, and the holes would then be full of lead ultimately.

Some granites will stain fairly easily

I simply dont believe that. I can find no evidence of it whatsoever/

and as far as joe bloggs
dealing with a kitchen salesman its easier to just tell him that it can
stain and needs a sealer.
If Granite doesn't allow stuff in how does it let Radon gas out.

Mostly, it doesn't. Except from the surface

G.Harman

--
A lie can travel halfway around the world while the truth is putting on
its shoes.