A metaphor comparing Hamlet to a vein of metal in Act 4, Scene 1 of myshakespeare's Hamlet.
Gertrude
O'er whom his very madness, like some ore
Among a mineral of metals base,
Shows itself pure. He weeps for what is done.
In this metaphor Gertrude compares the remorseful Hamlet to a vein of valuable metal, such as copper or tin, which stands out from the surrounding rock.
