Australian Stones

Those Australian Stones found in November 2019 between Pine Creek and Batchelor, Northern Territory, Australia..... Two of the stones are atracted to Magnet, they are very heavy, like partly made of Iron, they probably will need some kind of acid treatment, just to be sure....
The other two stones , not atracted to magnet, they display very dark tecture, in one of them something is visible in the other hardly you can see anything, except dark matricks.... stones found not far away from the road , less than 15 meters on side road....