Image:MarcasiteGeode.jpg

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A marcasite geode from my collection, taken by me on 3-13-05. These are two halfs of one geode which came from France. They are showing a little corrosion (the yellow around the edge and white in the center of right half) I gently clean them with a wire brush from time to time. Such cleaning doesn't upset the structure, but makes it so the two halfs don't quite fit together. This material can be crumbly.


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