Legend Mining Limited (Legend) announced an exploration activity update at the Mawson Prospect, Fraser Range, Western Australia. Exploration activity continues at the Mawson prospect, including diamond drilling testing areas
identified from interpretation of the 3D seismic, associated DHTEM and physical property surveys. Below is an overview of completed diamond drillholes RKDD083 and RKDD084, while RKDD085 is ongoing at time of writing.
MAWSON: Diamond drillhole RKDD083 was designed to target a seismic feature interpreted to be prospective chonolith below the Mawson discovery zone, offset by the Mawson fault. The drillhole intersected the mineralised chonolith and metasedimentary packages, as predicted, above the Mawson fault. Below the fault, an assemblage of metasedimentary units and lesser mafic intrusive suites were intersected, including narrow veins of cross-cutting massive sulphide mineralisation. The upper level of the main target zone encountered a prospective ultramafic unit with large amounts of digested metasediment. Marginal to this unit, a zone of heavy disseminated to net-textured magmatic sulphide was intersected at 751m downhole. Further data analysis is underway, including structural vectoring and additional drilling, which will aid in refinement of this new target zone. DHTEM and assay results are pending. Petrophysical property measurements are underway with hand-held and downhole instrumentation, with results pending. Diamond drillhole RKDD084 was designed to interrogate an area of seismic signature interpreted to
be a continuation of prospective chonolith below existing RC drilling. The drillhole intersected a mineralised mafic intrusive package below existing drilling levels, confirming the Mawson chonolith extends at depth as predicted by the 3D seismic. The intrusive package was intersected over a wide zone as an intense array of norite and gabbronorite flat-lying and cross- cutting dykes into the metasedimentary assemblage. Importantly, this metasedimentary assemblage contained a large abundance of carbonate, identified for the first time in abundance at Mawson. A <1m zone of massive magmatic sulphide with intense carbonate digestion was intersected at 450m downhole. This intercept is strong evidence of carbonate horizons acting as preferential mineralisation traps. These carbonate stratigraphic horizons act as preferential pathways for the intrusion to propagate and focus into a zone in the country rock, as well as supplying easily digestible volatile for the mineralised intrusion. This is a significant identification in the understanding of the Mawson chonolith host stratigraphy, as the carbonate stratigraphic horizon is the host of the Nova chonolith and hosts the Nova and Bollinger orebodies. Detailed analysis is now underway on RKDD084. Diamond drillhole RKDD085 is underway at time of writing. This drillhole is designed to intersect a seismic signature replication of that identified by diamond drilling 150m south. The geological, structural, and seismic interpretation is that the mineralised chonolith continues to the north-west of existing diamond drilling coverage.