metal in coolant

Hi guys,
I flushed my radiator today, and found lots of fine shiny metal floating in it. Looked a great metallic green that would go better on the outside of the bike than inside.
My only thought is that it might be wear from the water pump. Any other ideas?
I flushed my radiator today, and found lots of fine shiny metal floating in it. Looked a great metallic green that would go better on the outside of the bike than inside.
My only thought is that it might be wear from the water pump. Any other ideas?