It is one of the most studied meteorites due to its mass ( > 100 kg ) and that it belongs to a group of meteorites rich in organic compounds .
Its mass ( > 100 kg ) is the fact that it was an observed fall .
It is one of the most studied meteorites due to its mass ( > 100 kg ) , the fact that it was an observed fall , and that it belongs to a group of meteorites rich in organic compounds .