...agreeing with Gaz here..... very fine particulate in the oil is usually clutch & friction plate material. Large chunks (anything larger than dust) or 'slivers' of material are signs of destruction.
You have to keep in mind that there is a lot of surface area on those clutches, and even a very small amount of wear on all those steels/friction rings will put a lot of fine debris in the oil... it's one of the top reasons to change your oil more frequently than you would in a dry clutch motor. It gets worse if you're hard on clutch or putting a lot of power down...... you'd be shocked at how many stock bikes actually drive through the clutch a little bit at high rpm/load.
Attack life... it's going to kill you anyway.