Mojave National Preserve Boundary Adjustment Act of 2014 - Transfers administrative jurisdiction of 525 acres of land from the National Park Service to the Bureau of Land Management (BLM) for a rail project. Directs the Secretary of the Interior to acquire by donation approximately four acres of land within or adjacent to the Mojave National Preserve in California to be used for mitigation for every one acre of land removed from the Preserve.
Requires the acquired land to become part of the Preserve.
Authorizes the Secretary to permit cattle grazing on the acquired land in accordance with applicable National Park Service laws and policies.
Provides for the transferred land to remain withdrawn from: (1) entry, appropriation, or disposal under the public land laws; (2) location, entry, and patent under the general mining laws; and (3) the mining leases, mineral materials, and geothermal leasing laws.