Thanks for the tips I managed to get the effect of what i wanted by using:

   texture { T_Gold_2A normal { granite 0.1 scale 0 } }
   finish { reflection 1 phong 0.1 }

Regards
Martin.

Hughes, B. wrote:
> "Marty" <1@1.1> wrote in message news:40e00740@news.povray.org...
> 
>>Thanks for the point in an easier direction, but what i am after is a
>>very tight rough surface, the kind that you normally get with sand stone
>>or granite.
> 
> 
> Hey Marty (Martin), I replied to you in p.n. and since then have looked for
> some info about predeclared objects in isosurfaces. Mike Williams'
> Isosurface Tutorial helps explain a bit about that:
> 
> http://www.econym.demon.co.uk/isotut/dont.htm
> 
> For easy roughness texturing... and I do mean easiest... the 'crand'
> keyword, used in a finish statement, can add a sandpaper effect all by
> itself. A value of 1 is really extreme, with 0.1 being mild. Tends to be
> unusable in animations, it's so random.
> 
> Like was already mentioned, just a normal statement -- as in normal {
> granite 1 scale 0.1 } -- can do okay if you don't need the object surfaces
> actually changed from their usual smooth, textureless form. You'll need the
> depth value and scale to suit your object though.
>

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