Star Royalties Highlights Copperstone Project Economics and Stream Valuation
ACCESS Newswire · Star Royalties Ltd.

In This Article:

TORONTO, ON / ACCESS Newswire / March 13, 2025 / Star Royalties Ltd. ("Star Royalties", or the "Company") (TSXV:STRR)(OTCQX:STRFF) is pleased to highlight the reissuance of the Preliminary Economic Assessment ("PEA") on the Copperstone Gold Mine ("Copperstone") by Minera Alamos Inc. ("Minera Alamos") (TSXV: MAI, OTCQX: MAIFF). This reissued PEA does not incorporate ongoing work and trade-off studies currently being evaluated by Minera Alamos but does reflect a reduction in the Net Smelter Royalty ("NSR") burden on Copperstone as a 1.5% NSR was extinguished since the first publication of the PEA by Sabre Gold Mines Corp. in 2023. Furthermore, given the significant rise in the gold price over the last 18 months, the reissued PEA includes a gold price sensitivity analysis range of $1,000/oz to $3,000/oz compared to the original PEA's gold price sensitivity analysis range of $1,600/oz to $2,000/oz. All amounts are in U.S. dollars, unless otherwise indicated.

Highlights

  • Robust Copperstone economics: Copperstone is expected to generate $298 million in after-tax net cash flow, have an after-tax NPV5% of $227 million, and generate an after-tax IRR of 171% as per the reissued PEA and assuming a gold price of $3,000/oz.

  • Enhanced stream valuation: Star Royalties' stream is expected to generate approximately $4.6 million in pre-tax cash flow during Copperstone's first year of production and $20.5 million in life-of-mine pre-tax cash flow, prior to any mine-life extension from resource conversion and exploration success, as per the reissued PEA and assuming a gold price of $3,000/oz.

  • Opportunities to further enhance Copperstone's value: Minera Alamos has identified several opportunities to enhance value at Copperstone that will be further evaluated during the development phase. These opportunities include additional drilling in two priority areas with the goal of expanding mineral resources, investigating if previous marginal grade material can be added to production stopes given improved gold prices, evaluating opportunities to increase plant throughput from potential increases in mining rates and from potential resource expansion, as well as evaluating options for leveraging used equipment to reduce initial capital expenditures and lead time.

  • Exploration Potential at Copperstone: Minera Alamos has also identified several exploration opportunities to further enhance value at Copperstone, including drill testing for the presence of the Footwall Zone at depth and underneath the D Zone, continued drilling to define and expand the Southwest Zone located 760m southwest of the Copperstone pit, following up on the historic drill hole CS-266 that intercepted 3.4 g/t gold over 3.0m approximately 200m southwest of the Copperstone pit, as well as following up on historic drill hole 06CS-20 that intercepted 20.5 g/t gold over 1.5m approximately 900m southwest of the Copperstone pit.

  • 2025 development outlook for Copperstone: With Minera Alamos advancing the low-capital intensity Copperstone to production in the first half of 2026, upcoming catalysts this year from Minera Alamos are anticipated to include securing the remaining financing required to bring Copperstone into production, rehabilitating and installing process plant equipment at Copperstone, submitting final permitting documents for the addition of leaching facilities to the existing processing infrastructure at site, completing process plant installation at site, as well as receiving all necessary documentation to begin operations.

  • Equity ownership of Minera Alamos: The Company owns approximately 9.6 million shares of Minera Alamos, valued at C$3.5 million as per Minera Alamos' latest closing share price. In addition to Copperstone's upcoming development milestones, Star Royalties anticipates several additional catalysts in 2025 that could positively re-rate its Minera Alamos equity ownership, including receipt of final permits and a construction decision for their Cerro De Oro development project, Phase 2 pad construction and production ramp-up at their Santana gold mine, as well as the potential spinout and public listing of Minera Alamos' copper development projects.