Takeaways:

  • Lodestar Minerals (ASX: LSR) has confirmed visible copper sulphide mineralisation in two diamond drill holes at the Three Saints project in northern Chile.
  • The maiden hole intersected chalcopyrite, magnetite, pyrite and molybdenite from approximately 190 metres to 600 metres, with mineralisation open at depth.
  • The second hole returned visible native copper, chalcopyrite, pyrrhotite, magnetite and pyrite from 219 metres to 510 metres.
  • Assay results from the first hole are expected by end of May, with second-hole assays expected in early July.
  • The Three Saints project sits in the Coastal Cordillera belt, a globally significant IOCG copper trend.

Lodestar Minerals (ASX:LSR) has reported visible copper sulphide mineralisation in the second diamond drill hole at its Three Saints copper project in northern Chile, building on a similarly encouraging maiden hole earlier in the program. The results add early geological weight to the company’s interpretation of an iron oxide copper-gold (IOCG) system in the prospective Coastal Cordillera belt.

In the maiden hole, L3SRD003, Lodestar intersected chalcopyrite, magnetite, pyrite and molybdenite across multiple intervals from approximately 190 metres depth to the end of the hole at 600 metres. Mineralisation remained open at depth, suggesting potential continuity below the drilled interval and providing the company with a pathway to design follow-up holes targeting deeper extensions.

In the second hole, L3SDD004, drilling identified visible native copper alongside chalcopyrite, pyrrhotite, magnetite and pyrite from 219 metres to 510 metres while drilling remained in progress. Native copper is a less common indicator and adds to the geological narrative around the prospect, although the company emphasises that visual identification is not a substitute for laboratory assays.

Why the Coastal Cordillera matters

The Coastal Cordillera of northern Chile is one of the most significant IOCG belts in the world, hosting major operating mines and historical discoveries that have shaped the global understanding of the deposit type. IOCG systems can be very large and high grade, with deposits such as Olympic Dam in Australia and Candelaria in Chile providing the type templates.

For ASX investors, exposure to the belt has historically been limited, with most of the major producers held by global majors. Lodestar’s Three Saints project provides an opportunity to gain ASX-listed exposure to the system, and the early drill results have placed the company among the more closely watched small-cap copper explorers on the board.

Visual results versus economic grade

The market reaction to visible copper sulphides at Three Saints has been measured, in part because experienced investors are aware of the limits of visual logging. Visible sulphides indicate geology consistent with mineralisation, but they do not measure copper grade or continuity. Laboratory assays will be required to determine the economic significance of the intervals.

Lodestar has been transparent about this distinction, noting that visual estimates of sulphide mineralisation do not represent measured copper grades. This is a notable contrast to some peers and has been reflected in measured market commentary around the stock. Investors are now waiting for assay results from the first hole — expected by the end of May — and from the second hole in early July.

Disclosure and ASX engagement

Lodestar received an ASX price query during the program, to which it provided detail on drilling progress and its disclosure stance. The company’s engagement with the regulator has been viewed positively in the market, with proactive communication on what is and is not yet known reducing the risk of disclosure missteps as the project progresses.

This kind of clear disclosure is particularly important at the visible-mineralisation stage, where retail investor enthusiasm can outpace the underlying geology. Companies that manage disclosure carefully tend to avoid sharp post-assay corrections and maintain longer-term institutional support.

Sector context: Chilean exploration in 2026

Chile remains one of the most important copper jurisdictions globally, but exploration Capital has shifted in recent years. Permitting timelines have lengthened, water access has tightened and community engagement requirements have grown. New discoveries are increasingly made in the country’s less-explored regions, including parts of the Coastal Cordillera that have historically been overlooked relative to the porphyry-rich Andes.

For ASX-listed companies, Chilean exposure offers a strong Commodity narrative tied to global copper Demand growth and a robust legal framework for Mining. Lodestar’s project sits within this broader context, and the company’s progression at Three Saints will be watched as a barometer for ASX appetite for new Chilean exploration plays.

Risks investors are weighing

The principal near-term risk is that assay results disappoint relative to the visual mineralisation reported. Even if assays confirm meaningful copper grades, additional drilling will be required to define a JORC-compliant resource. Project Economics will also depend on metallurgy, infrastructure access, water availability and Capital intensity.

For ASX investors, Lodestar offers leveraged exposure to the IOCG thematic, but with the standard pre-resource exploration risk profile. The disciplined disclosure approach reduces some communications risk, but does not change the underlying geological uncertainty.

  1. Market, Sector or Investor Impact Section

Strong visible copper at Three Saints has placed Lodestar Minerals (ASX: LSR) in the small group of ASX explorers actively delivering geological catalysts on Chilean copper projects. Confirmed assays could trigger a significant rerating and lift sentiment for ASX peers with Latin American copper exposure. The market is also using LSR’s progress to test broader appetite for Chilean exploration, with implications for Capital raising windows across the cohort. Disciplined disclosure has supported credibility and could underpin institutional engagement as further results arrive.