GCM is well-positioned to uncover the copper secrets of this promising region. Pic: Getty Images
Green Critical Minerals’ maiden drilling reveals polymetallic potential at Boulia
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- Green Critical Minerals drilling highlights large polymetallic potential at Boulia
- Discovery could make company first mover in the region
- Geophysical surveys, petrological analysis to refine future drill targets
Special Report: Green Critical Minerals’ maiden drilling at the Boulia copper, gold and molybdenum project has revealed an extensive belt of prospective porphyry intrusions and skarns within the Georgina Basin near Boulia in Queensland.
Porphyry deposits are typically very large, polymetallic systems that contain copper, molybdenum, and gold, known for their low grades and high tonnage.
The company says notable results from three drill holes include the highest sulphur content recorded in Hole GCMB24RC004, with correlates with detectable gold values and peaks in silver, copper, and lead, demonstrating the presence of multi-metal mineralisation.
Hole GCMB24RC002 intersected an iron oxide mineralised skarn-porphyry zone with elevated copper, silver, and zinc levels over a 106m interval – which confirms the presence of mineralisation at target depths.
And in Hole GCMB24RC003, detectable gold was observed from 276m–291m and 253m–256m, accompanied by peaks in copper and lead along with a peak in tellurium, suggesting the potential for gold telluride mineralisation – which is often used in cooling mechanisms for electronic and military applications.
The company says this breakthrough at Boulia indicates the potential for an expansive belt of mineralisation modelled over a 200km2 area under cover.
New exploration frontier in Mt Isa
The Mt Isa region is well known for copper mining, and Green Critical Minerals (ASX:GCM) says there’s potential at Boulia for discovering a large metal deposit which would establish the area as a “viable new exploration frontier south of Mount Isa.”
This maiden program has also validated the company’s innovative geological interpretation, developed through 3D re-modelling of publicly available magnetic and gravity data, which suggested a concealed, extensive belt of prospective porphyry intrusions and skarns within the Georgina Basin sediments.
So far it looks like they’re on the right track, and now the plan is to double down on exploration in the area.
“With the identification of porphyry intrusions and skarns, the Boulia project exploration achievements represent a major validation of GCM’s geological interpretation and paves the way for enhanced exploration efforts,” the company said.
“The implications of this maiden drilling program position GCM as a pioneering explorer in the Georgina Basin, capable of unlocking new mineral districts.”
Refining future drill targets
Looking forward, GCM plans to advance induced polarisation and gravity surveys, and will send select drill chip samples for microscope petrology to provide more in-depth insights into the mineral system and guide the selection of targets for future drilling.
Then planning for the next phase of drilling will be on the agenda, with GCM also set to investigate two recently granted adjoining exploration licenses covering high-priority gravity anomalies trending to the north.
“The current results underscore the untapped mineral potential of the Georgina Basin, with the company well-positioned to lead the charge in unlocking this promising region,” GCM said.
This article was developed in collaboration with Green Critical Minerals, a Stockhead advertiser at the time of publishing.
This article does not constitute financial product advice. You should consider obtaining independent advice before making any financial decisions.
