A faithful and painful day in #MinCup24 - the battle of the carbonates: Rhodochrosite vs. Calcite.

One is a sink for calcium, the other for manganese. Both are cool, both are important, but only one of them is a major skeleton-forming mineral.
So it's #TeamCalcite today, but it will be #TeamCarbonate later.

https://www.mineralcup.org/2024/vote/r3m3