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These are specimens found in SW Colorado. One has a 'geode' crystalline structure inside, the others are smooth inside. Each are parts of a larger piece
This is part of a very large geode. I was told it was pink amethyst in matrix. However the crystals inside, especially the ones shaped in ball clusters,
I found this in the mountains of Colorado. I think it is actinolite.
I am looking to know what this is. I do know this, it's not as heavy as it looks, it sounds hollow, it sounds like glass when tapped on, it has no taste,
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Topaz is a silicate mineral that can be many different colors.