Found something weird

[IAMZIM]

I found this piece of pumice, or a type of volcanic rock, and it has these intensely colored nodules in some of the voids. One looks like a mini geode. Any ideas? I may have to take it up to my friends at the mining museum and see what they think!

 

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[Eu_citzen]

Those kinda look like secondary minerals to me. Not sure, copper related? Could also be zeolite-ish stuff filling voids.
I'd say bring it to the museum and let us know!