magnetism cant pass through magnetic materials because?
It sticks to the magnet. The magnetic material absorbs the magnetism. That's how they make magnets.
What makes you think they can't? Magnetic lines of force pass through all materials, both magnetic and nonmagnetic.
isnt vermiculite made with asbestos? if so would you put it anywhere you may breath it?
I believe it can. What it can't pass through is superconductors.