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metals left in petrified wood

I know that petrified wood can get it's color from minerals such as manganese, iron, and copper that were in the sediment during the petrification process. I'm concerned specifically about copper as I plan on submerging some petrified wood in an aquarium full of invertebrates that have no tolerance for copper. I'm I wrong to assume copper is still in the rock and can oxidize and leach out? or was the copper simply present during petrification, but no trace of it is left on near the rock surface.

From Joey - October 24, 2007 at 11:58:32

Message: 65212

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