Volcanic Lava Rock
On Tue, 30 Mar 2004 14:21:12 -0800, Ray wrote
(in message ):
Sounds like diatomite, a/k/a/ Dyna-Rok II
Thanks, Ray. I'll check it out, though I'd expect anything made of diatoms to
be pretty gritty, and this is quite smooth.
Tom
Walnut Creek, CA
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