this year’s mincup winner was rhodochrosite, a reddish manganese carbonate commonly found near silver veins. i was looking up more about it and discovered it’s actually been found as a biomineral formed by some fungi! i’m super into both fungi and minerals, so i’m looking into this a bit more. here’s a cool paper i found: https://www.mdpi.com/1422-0067/24/23/17093