"Andy Dingley" wrote in message
...
On 30 Sep 2003 02:45:36 -0700, (Michael
McNeil) wrote:

Granite is almost the same chemical as glass.

Maybe a third of typical granites is similar to quartz (this
proportion varies between sources). The rest is feldspars, and they're
quite different, softer and less inert. They're still robust (for
kitchens), but it's inaccurate to think "granite = glass"

A kitchen-fitter friend was called back to see a granite worktop he fitted
recently. The surface had been stained by placing two freshly baked hot buns
on it, in their greaseproof paper cases. He told me they left two
very-visible dark circles. The worktop supplier arrived and placed
bleach-soaked cloths on the stains and left them to soak in for a while. The
staining was reduced, but its still there.