[Gllug] Interesting programme on BBC Radio 4 2100-2130

[Dan Kolb]

On Tue, Aug 04, 2009 at 07:28:31AM +0000, Chris Bell wrote:
> On Mon 03 Aug, Dan Kolb wrote:
> > 
> 
> > 
> > The quartz is used to hold the molten silicon, from which single-crystal
> > silicon is drawn; this silicon is still obtained from sand.
> > 
> > Dan
> 
>    I did not notice any mention whether the sand for the final silicon (also
> a selected quartz) was derived from the same source, but there was a point
> made that the very high quality quartz was not totally unique. (I received a
> phone call during the programme).

No, the sand does not come from the same source. There's less requirement for
ultra-purity for the sand - the pure silicon will come out during processing.

Dan
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