Meteorite from Mercury?

texchanchan writes "The BBC reports that a chunk of rock, clearly from space, might have originated on Mercury. Analysis of its chemical makeup leads to this tentative conclusion. Specifically, it seems to have originated on something with 'a core of molten iron [and] an outer covering of silicon and aluminium that formed a basaltic crust.' This meteorite classification site sticks to the earlier theory that NWA 011 is from a Vesta-like source."