The black rock is said to be a meteorite.
The controversy surrounding the use of ‘God’ and Allah’ is mundane. It is a matter of perspective: Western perspective and Islamic perspective. As such, from an Islamic perspective, Allah = God, along the same lines as Yahweh = God.
But did the Christian Arabs use ‘Allah’ for ‘God’ during the six centuries prior to Mohammed, or was it forced on the Christian Arabs post-conquest by the Muslims?