I just started playing Terraria, so forgive me if this is obvious. When mining, I found a cave with water, and at the bottom of the pool I found this strange red glowing block.
I don't think it's crimtane, as (correct me if I'm wrong) it only spawns in Crimson biomes. Could someone tell me what this is? I can't mine it, but I'm using a "candy cane pick" I found in my inventory. (Guessing christmas)