Ann: Latin to acquire Geminis Mine and Don Gregorio Concession, page-25

Can anyone explain why the aim is to define just million tonnes of spod?  Seems minimal compared to other resources and hard to ship. Not wanting to down ramp as I'm krackers deep into lrs but is this worth pursuing? Maybe 1 Mt is the minimum to meet to make payment but more expected?
Stage 3:

1. At the completion of Stage 2, Stage 3 commences with the following payment obligations:
   
   1. Within five days of the commencement Latin must pay the Vendor US$50,000
      
      
   2. Within five days of the beginning of the third, sixth and ninth month Latin must pay
      
      the Vendor US$50,000 for a total of US$150,000.
      
2. The purpose of Stage 3 is to allow Latin to complete resource definition drilling aimed at
   
   defining a mineral resource containing a minimum of one million tonnes of spodumene.