Wiktionary
carbonates
n. (plural of carbonate English)
Usage examples of "carbonates".
They exhibit the carbonates, magnetites and PAHs seen in ALH 84001, but no movement or metabolic action.
A hotter surface would vaporize still more carbonates into CO2, and there would be the possibility of a runaway greenhouse effect to very high temperatures.
It's the same stuff as the shell, carbonates, but there's an organic component as well.