Company predicts Nebraska mine project could be worth $17.6B

The San Francisco Chronicle ^ | July 8, 2017 | The Associated Press

[Pete from Shawnee Mission]

It is, there are rare earth elements in NE.

This is either 1) a rare earth “pipe” caused by an asteroid strike, and the rare earths are from the asteroid. Or 2) possibly an extrusion on the southwest edge of the mid continent rift. (Which we do not see because it is buried by 600 feet or so of soil. (This is probably known by geologists, which I am not, so I mention both as possibilities. )

https://crustal.usgs.gov/projects/AGREED/Elk-Creek.html

and

https://crustal.usgs.gov/projects/AGREED/index.html

and

https://www.mindat.org/loc-219396.html

https://en.wikipedia.org/wiki/Midcontinent_Rift_System

“the rift’s eastern arm trends south to central lower Michigan. The western arm runs from Lake Superior southwest through portions of Wisconsin, Minnesota, Iowa, and Nebraska to northeastern Kansas.[1]”

The iron and copper deposits in Michigan and Minnesota are associated with the Mid continent rift.