Lithium prices tipped to rise 20 per cent by 2017 on demand for electric cars, page-8

rae915, presentation 121015 has all that info

Review – Summary Tables
Table 1.1 - Financial Assumptions:
Item Description Value
Spodumene (6% Li2 O) US $/t $445.00
Tantalite US $/lb $75.00
Exchange Rate AUD/USD 0.75
Penalties Payable % Spodumene Variability 5.0%
Penalties Payable % Marketing 5.0%
Penalties Payable % State Royalty 5.0%​

NPV Discount Rate % 8%