It is incredibly rare for mineralsiation to develop in the...

It is incredibly rare for mineralsiation to develop in the saddle setting that they have presented, to have the mineralsaition dipping in opposite directions like this. The tructural interference pattersn you would need to produce that setting would be visible at the regional scale, and are certainly not visible in the Sandstone region.

Mineralsiation extended over several kilometres is not unusual, but it is as a series of linked or stacked and repeating structures, they share a common orientation, look at the likes of Breaker's Bombora, or the Super Pit, for continuity of structure and orientation.