ore of any kind, tends to be somewhat grainy due to the unrefined nature of it. but you've definitely got the flavor of it going here. it can be clumpy like you've got it but there tends to be a lot of particulate mixed in. so you rarely see that molten look like you've got in presets 2 thru 5. six is pretty good and so is seven, though seven is a bit too smooth for most ore. even gold nuggets tend to have a lot of particles mixed in.
If wishes were horses... there'd be a whole lot of horse crap to clean up!
Craig