What is the correct term for the habit or action of rubbing statues' parts (noses, fingers, feet etc.) for luck or other superstitious reasons? I mean a learned word, like 'philately' for 'collecting stamps'. I'm fairly certain there is such a term, but for the life of me I can't recall what it is, and my Google-fu proved unequal to the task.
I would call it statue burnishing or statue rubbing. Roadside America has an article titled: Statue Burnishing Etiquette.
I don't think you'll find single word for this practice.