Castile completes the 2026 Rover 1 Scoping Study
Gold, Copper and Critical Minerals in the NT
Castile Resources (ASX:CST) has completed the 2026 Rover 1 Scoping Study on the Rover 1 Project near Tennant Creek in the Northern Territory. The study models a two-stage development: an underground mine and a modern 750,000 tpa processing plant at Rover 1, then a refining facility at the Middle Arm Sustainable Development Precinct in Darwin.
August 2026 Rover 1 Scoping Study
The 2026 Scoping Study models Rover 1 as a two-stage development with an 11-year initial mine life, anchored on a 750 ktpa underground operation.
- A$1.08BRover 1 NPV, pre-tax8% discount rate
- A$4.81BTotal project revenuesLife of mine
- 56.3%Pre-tax IRRBase case
The Rover 1 Project
A high-grade IOCG deposit with five revenue streams.
Rover 1 is a high-grade Iron Oxide Copper Gold (IOCG) deposit beneath the Rover Mineral Field, 57 km from Tennant Creek.
The Rover 1 Scoping Study models an underground mine build with a modern 750,000 tpa processing plant focussed on the production of gold, copper, bismuth, cobalt and magnetite downstream products in Stage Two, and delivering robust operative and financial outcomes with an initial project life of 11 years.
This Scoping Study models a two-stage development:
- Stage One
- Mining and processing to concentrates at the Rover 1 site.
- Stage Two
- Construction of a refining facility in Darwin at the Middle Arm Sustainable Development Precinct, using Stage One cashflows.
Project life revenue by stream
- GoldA$1.94B40%
- CopperA$1.71B36%
- BismuthA$595M12%
- MagnetiteA$331M7%
- CobaltA$234M5%
Source: 2026 Rover 1 Scoping Study, ASX:CST, August 2026 · Mineral Resource update, ASX:CST, 20 October 2025.
AustraliaThe Rover 1 Project
Where things stand
The path to the BFS.
Castile has completed the 2026 Rover 1 Scoping Study. It now underpins the Bankable Feasibility Study, which follows once final third-party cost estimates are signed off.
Dec 2022
Pre-Feasibility Study complete
Rover 1 modelled as a 500 ktpa underground operation.
Apr 2023
Major Project Status
Awarded by the NT Government, with land allocated at Middle Arm in Darwin.
Oct 2025
41% Mineral Resource uplift
Updated JORC Mineral Resource of 7.86 Mt.
Feb 2026
A$8.4M placement
Raised to advance Rover 1 toward development.
Aug 2026
2026 Rover 1 Scoping Study
Rover 1 valued at A$1.08B NPV (8%) pre-tax.
Next
Bankable Feasibility Study
Follows once final third-party cost estimates are signed off.
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