Anyone know what this is?

Question

I don't know where this was found. I used the h acid test and it immediately bubbled. Does not scratch glass. Leaves a coppery colored streak. Can be scratched with fingernail but does not flake. It is not transparent.

roughly 1 1/4 longest point. 1" wide at center. 3/8th D.

 

 

Answer 1

Little slice of Jasper. Google it. It is one of the most beautiful rocks. Don't get wrong it could be something else but I think Jasper.

Comments

I went through all the jasper images and just copper images before I posted- I didn't see anything close- or I may have missed it- I will check again. Yes, it is a beauty! Thanks for your help!

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It certainly has the look of Jasper, but if it effervesces in acid, that would indicate it as being a carbonate - i.e. such as banded calcite/aragonite like travertine. Though the brick-red color is definitely odd for that - perhaps its deeply iron-stained.

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H:

I think you are right. I looked up Banded Calcite and there was a photo that showed a close up, no edges. The banding and color were very similar. II believe it is Banded Iron! Another mystery solved!

Thank you very much,
D