Platinum elements in meteor fragments

At http://phys.org/print296759652.html … some images of fragments of the Chelyabinsk meteor which seem to show the object had been involved with a previous encounter of some kind, and perhaps it had strayed too close the Sun. Russian geologist presented the evidence to a conference in Florence – evidence of an interior melting process. The team also found platinum group elements in the crust of the meteorite – and these have recently been implicated as evidence of an extraterrestrial object at the Younger Dryas 'boundary' event. Interesting times.