Marble Disease? What is causing this?

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missbossy
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Marble Disease? What is causing this?

Post by missbossy » Mon, 30 Oct 2006 9:44 am

The green granite tiles in my bathroom are showing signs of corrosion. In a few spots (not exposed to water) the granite has become chalky and pitted. The stone seams to be eaten into a white powder. The corrosion appears to spread from one area to another like a disease.

If I don't wipe the area where the corrosion appears, a dusty moss will grow - it looks like some kind of fungus. There is no smell.

Any idea what this is and what I need to do to stop it? It's doing irreparable damage to some of the tiles.

rob w
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maybe wrong but

Post by rob w » Mon, 30 Oct 2006 1:59 pm

It sounds like your granite is actually either reconstituted stone or a mixed stone that has a high level of calcite in it.
To check do a "lemon test”
Rob

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missbossy
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Cheers

Post by missbossy » Mon, 30 Oct 2006 2:39 pm

Thanks - I'll try it.

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