Thomas de Groot <tho### [at] degrootorg> wrote:
> I realise that I have taken
> on a major investigation :-) and that is ok.

So did I while writing this!


> Imo, the white represents the quartz veins that cut through the
> granites. In the original code they came out as mere "clouds" of grey; I
> brought them back at least as something looking like veins (the top
> texture). See the examples I provided.

IIRC, the marble pattern is just a series of repeating lines that attains a
marble look due to the turbulence.   Maybe make a material_map using turbulated
marble and have the granite and quartz materials be the entries.

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