On Jul 27, 9:34 am, "EXT" wrote:
Or they can get a $400 discount on some new quartz or Corian counter
tops.

Since granite is mostly quartz wouldn't synthetic material made with quartz
have most of the same problems?

No, because it is the trace minerals in the granite, like Uranium and
its decay daughters, or potassium-40 that contribute most of the
activity.

Pure quartz would have none of those. Pure quartz is silicon
dioxide,
the natural isotopes of both of those elements are all stable.

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FF