Newcore’s Enchi gold hits in Ghana: mine plan and grade uplift notes for engineers
Reviewed by Joe Ashwell
First reported on MINING.com
30 Second Briefing
Newcore Gold has reported one of its widest, highest-grade intercepts at the Boin deposit on the Enchi project in Ghana, with reverse-circulation hole KBRC411 cutting 69 m at 2.59 g/t Au from 58 m depth, including 24 m at 6.41 g/t from 59 m, and KBRC414 returning 32 m at 0.83 g/t from 70 m, including 6 m at 3.37 g/t. The seven new RC holes, totalling 960 m over 1.9 km of strike and drilled to a maximum vertical depth of 125 m, all intersected mineralisation and target conversion of Boin’s 15.9 Mt probable reserve at 0.84 g/t and 23.5 Mt indicated at 0.73 g/t. These results, largely outside the June PFS resource that underpins a planned 5.5 Mt/y open-pit and mill producing 953,000 oz over 9.3 years, point to scope for higher-grade feed and mine plan optimisation as Newcore advances an 80,000 m programme and prepares a mining lease application.
Technical Brief
- Reported intercepts are downhole lengths, with true widths estimated at 75–85% of drilled thickness.
- Boin’s gold-in-soil anomaly extends over 6 km, with ~40% of this strike still untested.
- Average vertical drill depth at Boin is only ~100 m, indicating substantial room for down-dip extensions.
- Newcore’s 80,000 m programme has completed 47,100 m to date, feeding future resource and reserve updates.
- Reverse-circulation drilling is targeting near-surface resource conversion, while diamond drilling focuses on deeper, higher-grade Nyam-style targets.
- At Nyam, diamond hole NBDD088 intersected 25.3 m at 3.67 g/t from 307.7 m, below the current pit shell.
- Enchi’s June PFS envisages a 5.5 Mt/y open-pit and conventional mill, producing 953,000 oz over 9.3 years.
- PFS economics at US$3,800/oz gold indicate US$496 million after-tax NPV5, 37% IRR and 1.6-year payback.
- Initial construction capital for Enchi is estimated at US$351 million, for a multi-pit, central-plant configuration.
- Enchi’s total probable reserve stands at 51.3 Mt at 0.64 g/t (1.06 Moz), with 83.6 Mt indicated and 40.1 Mt inferred.
Our Take
Across recent Ghana gold coverage, including Enchi and Asante Gold items, operators are increasingly highlighting below-pit mineralisation similar to Nyam’s 25.3m at 3.67 g/t, signalling that long-life, lower-grade open pits are being paired with higher-grade underground options to defend project NPVs against rising capex.
With Enchi’s planned 5.5Mt/y throughput and a relatively modest C$107 million market valuation, the project sits in the smaller-cap, buildable end of African gold projects in our coverage, which can make it a more realistic takeover or JV target for mid-tier producers looking for pipeline ounces in Ghana.
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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