What is the maximum period for which the state can lease lands for mineral purposes?

The maximum period for which the state can lease lands for mineral purposes is set at 20 years. This is established under Arizona state law, where leases granted by the state for mineral extraction are typically limited to this timeframe to ensure regular evaluation of land use and potential renewal based on the continued viability and necessity of such leases. Setting a fixed period like 20 years helps to manage state resources effectively, allowing for periodic review and potential adjustments to terms, conditions, and the exploration and extraction methods being employed.