Hillgrove Resources finds more copper outside Kanmantoo resource

• HGO spots copper outside of existing Kanmantoo mine resource
• Deepest drill hole intersected 2.4m at 0.9% copper and 0.04g/t gold
• Resource definition drilling has also intersected multiple positive results
• Drilling continuing with the goal of growing the resource base

Special Report: Hillgrove Resources has found copper mineralisation outside the existing resource while drilling at its Kanmantoo operations in South Australia.

The company is undertaking 20,000m of resource extension drilling and 40,000m of resource definition drilling with the aim of growing the resource of 19.3Mt at 0.77% copper and 0.14g/t gold.

Drilling at the 750 diamond drill site at Kavanagh  – the deepest underground drill site at the project – intercepted 2.4m at 0.9% copper and 0.04g/t gold (uncut) from 238.6m downhole in hole 25KVUG0597.

In addition to this, with the resource definition drilling, there were multiple positive results, which included:

• 13m at 2.24% Cu and 0.13g/t Au (uncut) from 109m downhole;
• 2m at 1.19% Cu and 0.17g/t Au (uncut) from 108m downhole;
• 4.1m at 0.9% Cu and 0.06g/t Au (uncut) from 82m downhole; and
• 9m at 0.79% Cu and 0.28g/t Au (uncut) from 196m downhole.

Hillgrove Resources (ASX:HGO) said finding this mineralisation outside the resource estimate highlighted the continuity of the Kavanagh ore body.

As 25KVUG0597 provided the deepest intersection at Kavanagh West, being 200m below the existing stoping area, it indicates a new vertical extension target.

Drilling from underground is on track to achieve the 60,000m target, with 5,931.6m completed in May from the fulltime operation of three underground diamond rigs.

Watch: New top mining metrics for Kanmantoo copper

 

Looking to grow the resource base

Hillgrove will continue drilling in the coming months focused on investigating the potential to grow the resource base and enhance the long-term outlook at Kanmantoo.

“We are still in the early stages of the drilling program at the Kavanagh 750 diamond drill site but I’m encouraged by the results so far,” CEO and managing director Bob Fulker said.

“These are the first holes drilled in this area since underground development began and they not only reaffirm our confidence in the existing resource but also include several intersections with grades exceeding the current average in the published mineral resource estimate.

“One particularly positive result comes from hole 25KVUG0597, which intersected mineralisation approximately 200 metres below the current Kavanagh West stoping horizon on the 785 level.

“Although the intersection is narrow, it represents the deepest mineralised hit recorded at Kavanagh West to date.

“This opens up a new vertical extension target with the potential to expand the mineral resource estimate if this trend continues.”

An updated resource estimate will be released in Q4 2025 following a mid-year data close off window.

This article was developed in collaboration with Hillgrove Resources, 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.