The passage through the atmosphere would slow such a small object down pretty quickly methinks, having almost no momentum. If the story is true the boy is lucky not to end up with a pea sized hole in the brain.
I heard a figure of something like 500 tonnes of meteorite dust falls gently on the surface of the Earth every day, but that might be apocryphal . Can remember clearly being a very nerdy kid in 3rd grade primary, pulling magnetic particles of dirt out of the soil with a magnet and selling it to other kids as little bags of 'meteorite dust'. I guess I win some points for entrepreneurial spirit anyway
