Legend Mining Limited (ASX: LEG) has successfully used a downhole electromagnetic (DHTEM) survey to identify a significant new target at the Mawson Prospect in the high-profile Fraser Range region in Western Australia.
Legend Managing Director Mark Wilson said following the receipt of the promising results from the DHTEM of diamond drillhole RKDD007, the company will fast-track follow-up testing.
“The diamond drillhole to test this offhole conductor at Mawson will be the first hole drilled in the upcoming March drill programme,” Mr Wilson said.
“The modelled strength and location with respect to the known mineralisation in hole 007 makes this a compelling target.
“Meanwhile the development of the 3D model of Mawson is ongoing with further diamond drill targets to be determined in due course.”
Modelling of DHTEM survey data from the recent diamond drilling programme at Mawson incorporated all geological and structural data to assist with the EM plate interpretation and provide geological context/control to the modelling.
Multi-loop interpretations were necessary to overcome issues related to conductive overburden and the close proximity of large stratigraphic conductors (previously identified moving loop EM conductors D1, D7 and D8) with the potential to mask mineralisation.
Mr Wilson said RKDD007 returned significant DHTEM results with an inhole feature associated with the 14.9m main sulphide mineralisation intersection and a strong down dip offhole conductor located to the south-west.
The inhole conductor is a localised feature associated with the previously reported Ni-Cu sulphide intersection of 14.9m @ 1.07%, 0.75% Cu, 0.06% Co from 114m and is hosted within a mafic/ultramafic intrusive.
The modelled offhole conductor is considered a high priority drill target given its strong conductance of 6,000-8,000S and its interpreted position down dip of the sulphide mineralisation intersected in RKDD007.
An additional three lower priority inhole/offhole conductors were also identified between 170-230m in RKDD007 associated with footwall metasediments below the main mineralised mafic/ultramafic intrusive.