My garden had a surprise piece of calcite | Geology Rocks

Michael Hart · 2026-02-25T05:00:50.193056+00:00

I tested it with vinegar and a cheap guide. The fizz reaction was more fun than I expected.

Where did you end up finding your piece? That vinegar test is honestly the best part about finding certain rocks. I have this beat up old field guide from a used book store that I drag around, and getting that fizz never gets old. It feels like a little science experiment right there in your own kitchen. That quick, bubbly reaction is just so satisfying to see every single time.

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sandralee7mo ago

Found it buried deep or just lying on the surface?

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janar577mo ago

That fizz reaction is a blast, isn't it? My kid and I tried that once and it made her day. When you mention your cheap guide, was it a little book or something you found online? I'm always looking for better ways to figure out what I dig up.

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