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Re: Problems with a gift!/e-store ideas
In a message dated 4/1/00 9:02:37 AM Mountain Standard Time,
apistowise@bewellnet.com writes:
> I'm confused by your answer. Think about what is happening to ancient marble
> monuments around the world right now. They are disintegrating from
> pollutants &
> acid rains in the air. Marble is metamorphosed limestone - CaCO3.
> Metamorphosed
> limestone (marble) is denser and less porous, with larger mineral grains,
> than
> sedimentary limestone. But it reacts to chemicals in the same way
limestone
> does, only a bit slower. Would you put put limestone in a tank with soft
> acid
> water??. Perhaps you could put an inert coating over it for protection,
but
> most
> marbles have veins, too. I would think these would be structural
weaknesses.
> I
> wouldn't use marble as a backing without some other material (glass) as a
> support.
Maybe I'm confused here. I thought marble was metamorphosed granite. If it
is limestone, then it will need a couple layers of clear epoxy over it. Can
I just retract my statements? Please??
Bob
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