Lunahuasi Jupiter assays: resource growth and drilling priorities for mine planners
Reviewed by Tom Sullivan

First reported on MINING.com
30 Second Briefing
Copper-gold-silver assays from NGEx Minerals’ Lunahuasi project in northern Argentina have extended the high-grade Jupiter zone and expanded Saturn, with headline hole DPDH077 at Jupiter cutting 10 metres from 89 metres depth grading 0.88% copper, 3.14 g/t gold and 12.2 g/t silver, including 7.6 metres at 18.84% copper, 5.54 g/t gold and 336.7 g/t silver. Saturn results include DPDH069 with 135 metres at 1.18% copper, 0.81 g/t gold and 27.2 g/t silver from 437 metres, and DPDH072 with 34 metres at 1.43% copper, 1.8 g/t gold and 40.2 g/t silver from 193 metres, suggesting a large, structurally controlled disseminated and stockwork system with multiple very high-grade veins and a possible new zone east of Saturn. The stage 4 programme totals 27,318 metres across 32 holes, with Jupiter now a priority for stage 5 targeting a potentially larger future resource, while NGEx’s TSX shares eased 2% to $23.96, valuing the company at $5.2 billion.
Technical Brief
- Stage 4 drilling totals 27,318 metres across 32 holes at Lunahuasi.
- Jupiter mineralisation is now confirmed over roughly 400 m x 500 m areal extent.
- Lunahuasi lies about 1,300 km north-west of Buenos Aires in northern Argentina’s Andes.
- Fewer holes have been completed at Jupiter than at the Saturn and Mars targets to date.
- Saturn is interpreted as a structurally controlled disseminated and stockwork system cut by very high-grade veins.
- Intersections in DPDH072 suggest an emerging, previously unrecognised mineralised zone east of the current Saturn footprint.
- Ongoing drilling aims to physically connect discrete mineralised zones into a single, larger resource envelope.
Our Take
The copper-gold-silver tenor at Lunahuasi’s Jupiter and Saturn zones puts NGEx Minerals into the same high-grade narrative as other copper-gold names in our database, but unlike the Central Asia Metals–Cygnus or Kodiak–Teck transactions, NGEx is still in the pure exploration/de-risking phase rather than consolidation or M&A.
The combination of very high-grade short intervals (e.g., sub-10 m runs) within broader mineralised envelopes at Lunahuasi echoes the grade distribution seen in several copper-gold porphyry and epithermal systems in our coverage, implying NGEx may ultimately have optionality between a bulk-underground approach and selective high-grade stoping if continuity is confirmed.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
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