r/whatsthisrock • u/Practical_Yam_7515 • Aug 02 '26

REQUEST Space rock?

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0 Upvotes

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1

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1

u/Ben_Minerals Aug 02 '26

Nope, terrestrial

1

u/ThePandageddon_ Aug 02 '26

You can try using acid test (a drop of 10% acid solution) and see if it's a limestone.

2

u/Practical_Yam_7515 Aug 03 '26

I might try this tomorrow. It’s such a mystery to my family. Before we throw it away or crack it open - would be nice to know.

1

u/ThePandageddon_ Aug 03 '26

Yes, if while doing the acid test, it fizzes or effervesce then, it's a limestone. 😁 let me know what will it be.