Legend Mining Ltd (ASX:LEG) has kicked off a new field season at the Octagonal prospect within the Rockford Project, Fraser Range, Western Australia, with an extension of the maiden High-Power Fixed Loop Electro-Magnetics (HPFLTEM) survey.
Extensive weather-related access delays meant extending the maiden survey completed in December 2023 could not be carried out until now.
The new survey will follow up a strong conductive zone on the eastern flank of Octagonal which remains open and is scheduled to take 20 days to complete.
“Unprecedented rainfall”
Legend executive chair Mark Wilson said: “Finally our 2024 field season is underway with the mobilisation of the High Power EM crew and equipment to Octagonal.
“The unprecedented rainfall in early March this year which inundated the Rockford project area has been followed by several more rain events which have cut vehicle access to the project, rendering any fieldwork impossible.
“The Trans Australian Railway access road was opened to all traffic from 10am, Tuesday, July 16, 2024, which has cleared the way for the survey to start and news flow for our shareholders.”
Current Rockford Project prospect locations on gravity.
About the survey
Highpower EM Geophysical Services Pty Ltd has mobilised to the Octagonal site to commence the HPFLTEM survey extension data acquisition.
The channel 32 data of the maiden HPFLTEM survey identified a strong conductive source extending to the east of the completed survey area.
This area is of interest as it is the interpreted extension of the Octagonal intrusion based on completed drilling coupled with seismic and structural interpretation. Encouragingly, diamond drill holes OCT0189 and OCDD004 both intersected nickel-copper sulphide within fertile ultramafic sills proximal to the strong conductive source.
Similar to Nova-Bollinger
This confirms that mineralised intrusion occurs outside the main Octagonal Intrusive Complex (OIC) body and is identical to the Nova-Bollinger mineralisation setting.
Data acquisition of the extension survey is envisaged to take 20 days to complete, followed by data modelling with results expected by the end of August 2024.
Future work
Following completion of the Octagonal HPFLTEM survey, data acquisition will begin at the Magnus prospect.
Legend Mining’s future work program at Octagonal includes:
- HPFLTEM survey data modelling;
- Seismic reprocessing results;
- Diamond drill hole target generation; and
- Heritage clearance for diamond drilling.