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"

--
Smert' spamionam