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by gus_massa 765 days ago
The chemistry part is not surprising [1], but I have very litle idea of the composition of rocks, I expected them to be salts like silicates, carbonates, sulfates that don't react with carbonic acid. [2]

[1] I had a specialization in Chemistry in my high school, so I don't know it it's normal to know that.

[2] IIRC someone posted a project to make huge beaches of malaquite. (It would be weird/nice, becuse it's green.). The idea is that it reacts with the CO2, and the waves would do much of the work to break them in small pieces. If I guess correctly, the reaction is Cu2CO3(OH)2 + CO2 -> 2 CuCO3 + H2O