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Posted in response to Getting iron off rough stones? from Amanda Tinder on December 11, 2007 at 12:18:23:

Re: Getting iron off rough stones?

If you can't aquire the chemicals needed or are afraid to use them, here is a possible alternate solution. I just thought about it Wednesday evening while cooking some rhubarb. Some boiled over the top of my copper clad kettle and left the copper surfaces a new bright copper color. Rhubarb contains a high amount of oxalic acid. Oxalic acid is used to remove iron stains from quartz crystals. I believe that the leaves of the plant contain even hihger concentrations of oxalic acid. Just a thought, but hot cooked rhubarb could work. This may sound crazy, but when all else fails, why not? I think this coming spring I will try some on a few quartz crystals that are slightly iron stained. I may try it using the leaves. Good luck. Lloyd

From Lloyd Brown - December 21, 2007 at 08:11:38

Message: 65734

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