These slimes ore totally metal.
Rock slimes earned their name from the rocky crown of sharp spikes atop their slimy bodies. But their affection for minerals doesn't end with their appearance: rock slimes are strict vegetarians, favoring the satisfying crunch of the heart beet most of all.
The dangers of a rock slime should be fairly obvious: their rocky crown is sharp enough to pierce straight through a rancher's boots. But it's not all about watching where you're stepping as these rocks are always rolling. When you see a rock slime revving up for a tumble, it's best to get out of the way.
Rock plorts are prized for being a key component in the production of 'blue metal,' an amazing alloy that's stronger than titanium and lighter than plastic. Because of its amazing strength, blue metal is often a key component in the hulls of light-speed capable starships, synthetic appendages, and protective holophone cases.