Lets not forget that SUM has both Niobium and Tantalum. And that...

Lets not forget that SUM has both Niobium and Tantalum.
And that Tantalum is worth 4 times as much as Niobium.

Now even at 1% of each there is far more value than just the Niobium alone.
If they weighed the same combined value would be 5 times that of just Niobium.
Given Tantalum weighs nearly twice as much,
That value is multiplied by even more:

Niobium weighs 8 570 kg a Cubic Meter
Tantalum weighs 16 650 kg a Cubic Meter

This means that same one percent grade of Tantalum is around double the weight of 1% Niobium,
Giving it around 8 times the value of 1% Niobium,
And a combined value of 9 times that of Niobium alone.

And that's just with 1% grades for each,
We know Pegmatites usually contain a higher percentage of Tantalum,
Making it likely even a Higher Value of combined grades of Niobium and Tantalum....

Basically 10 times the value of Niobium alone is not out of the question !!!!