Current list of all the minerals, rocks, etc. That have appeared so far
>quartz
>garnet
>pyrite
>gold!
>bismuth
>magnetite
>flourite
>sapphire
>copper (?)
>scheelite (?)
>agate (quartz btw)
>chalcedony (quartz btw)
>jasper (quartz brw)
>olivine/peridot (my new favorite question mark?(?))
>platinum
>serpentinite

(Note that the ? means they were shown briefly or mentioned in passing, but not focused on. If they get a focus, I will remove the question mark!)