Orange Minerals Hunts Bedrock Source of Ghana Alluvial Gold Before First Drill Hole
Key Takeaways
- Orange Minerals' 166km² Tepa Gold Project in Ghana has no known drilling, with past work limited to surface sampling and trenching.
- Extensive alluvial gold workings in the Mpasaso and Ohiapae licences are the core target, with Orange hunting for the bedrock source behind them.
- A 100m-spaced drone magnetic survey is planned to run through the remainder of 2026, ahead of any potential maiden aircore or RC drilling.
- Ministerial consent for the licence assignment to Hunsuyesi Resources Limited came on 10 April 2026, but registration and notification steps are still being finalised.
- Tepa sits within about 40km of Newmont's +20Moz Ahafo and Galiano's +7Moz Asanko camps, though those figures describe neighbours and not Tepa itself.
Orange Minerals advances Tepa Gold Project exploration in Ghana
Orange Minerals NL (ASX: OMX) is advancing a systematic gold exploration and targeting program at its 166km² Tepa Gold Project, aimed at identifying potential bedrock gold sources in Ghana. For investors following Ghana gold exploration, this is an early-stage update with no assays, drill results or resource figures attached.
The hook is simple. Extensive alluvial gold workings have been identified across the project, yet the company reports no known drilling across the licences, with past exploration limited to surface sampling and trenching.
Chris Michael, Managing Director
“Our immediate priority is to investigate where the alluvial gold is coming from and whether there are primary bedrock gold sources that could support a significant discovery.”
Michael also said: “We are taking a disciplined approach, using modern geophysics, geological mapping and geochemistry to identify the structures and prospective areas that warrant drilling…”
What this tells you is that the plan is evidence-led. The company says it intends to avoid committing capital to targets without supporting geological evidence, which frames Tepa as an early-stage entry into an established district.
When big ASX news breaks, our subscribers know first
An underexplored project in the Sefwi Gold Belt
Location and neighbours
The Tepa Gold Project comprises the Mpasaso, Wioso and Ohiapae prospecting licences in Ghana’s Ashanti Region. It sits on the eastern margin of the Sefwi Gold Belt.
Neighbouring deposits in the belt include Asante Gold Corporation’s Bibiani and Chirano mines, plus the Enchi and Anuiri-Afema deposits further southwest. Tepa is also within approximately 40km of Newmont’s +20Moz Ahafo gold camp and Galiano Gold’s +7Moz Asanko gold mine camp.
That is district context only. Those figures describe neighbouring camps, not any endowment at Tepa.
| Licence | Location | Underlying geology |
|---|---|---|
| Mpasaso | Western | Birimian mafic metavolcanic and granitoid units |
| Wioso | Western | Birimian mafic metavolcanic and granitoid units |
| Ohiapae | Eastern | Predominantly metasedimentary rocks and granitoid intrusions |
The company notes the western rock types are associated with gold mineralisation elsewhere within the Sefwi Belt. It describes the eastern licence as an additional geological setting for potential structurally controlled gold mineralisation.
Why alluvial workings matter
Alluvial gold is gold that has been weathered and eroded from its original rock source and redistributed, often into drainage systems. Workings can therefore point towards where a bedrock source might be.
At Tepa, the workings are concentrated in the Mpasaso and Ohiapae licences. Orange intends to investigate whether they are associated with structurally controlled primary gold mineralisation, including potentially prospective shear zones, fault intersections and geological contacts.
Keep the limits in mind. Alluvial activity is an indicator only, and the company itself describes the workings as “encouraging exploration indicators” rather than evidence of bedrock mineralisation.
Exploration program and pathway to maiden drilling
Orange has outlined a staged targeting workflow:
- Geological mapping and historical data compilation, which has commenced.
- A 100m-spaced drone-borne magnetic survey, planned to commence subject to relevant regulatory and operational requirements, with surveying expected to continue throughout the remainder of 2026.
- Potential infill magnetic and induced polarisation (IP) surveys over selected areas. IP is a geophysical method used to detect certain types of mineralisation beneath the surface.
- Surface geochemical sampling.
- An integrated geological targeting model to evaluate and rank targets for a potential maiden aircore or reverse circulation (RC) drilling program.
The magnetic survey is expected to give new information on the underlying geology, particularly where surface weathering and cover restrict interpretation. The principal objective, according to the company, is to identify potential primary bedrock gold sources and build a pipeline of priority targets for systematic drill testing.
For you as an investor, that means news flow is likely to centre on survey and targeting progress before any drilling. Drilling remains a potential outcome, not a commitment.
The next major ASX story will hit our subscribers first
Ghana operations established and next steps
As announced on 10 April 2026, Orange received Ministerial consent under Ghana’s Minerals and Mining Act, 2006 (Act 703). It covers the assignment of the Mpasaso, Wioso and Ohiapae prospecting licences to its wholly owned Ghanaian subsidiary, Hunsuyesi Resources Limited, following a recommendation from Ghana’s Minerals Commission.
The transfers are not yet fully complete. The company is progressing the remaining formal notification and registration processes.
On the ground, Orange has undertaken initial community engagement with local authorities and representatives, established a field office and accommodation, and commenced expanding its local exploration team.
The stated next steps are:
- Finalising the remaining formal licence transfer and registration processes.
- Continuing geological mapping, historical data compilation and interpretation of mapped alluvial gold workings.
- Completing the planned 100m-spaced drone-borne magnetic survey, subject to applicable regulatory requirements.
- Integrating geophysical, geological and geochemical datasets to identify priority gold exploration targets.
- Undertaking follow-up magnetic and IP surveying across selected prospective areas, where warranted.
- Advancing priority targets towards a potential maiden aircore and/or RC drilling program.
- Continuing local recruitment and community engagement.
Beyond Tepa, Orange continues to review additional gold opportunities in Ghana that could complement the project and expand its exploration portfolio. The company also focuses on polymetallic opportunities in Western Australia’s Pilbara region and has projects in New South Wales’ Lachlan Fold Belt.
Get Ghana Gold News Before the Market Moves
Join 30,000+ investors receiving FREE breaking ASX gold news within minutes of release, complete with in-depth analysis. Click the “Free Alerts” button at Big News Blast to get early-stage exploration updates the moment they break and stay ahead of the next market-moving announcement.