Legend Mining ends Mawson field season spectacularly with best diamond drill hole to date

Legend Mining Ltd (ASX:LEG) has recorded the best diamond drill hole to date at its Mawson prospect within the Rockford Project, Fraser Range, Western Australia, with RKDD034 intersecting 43.1 metres of massive nickel-copper sulphide, including one zone of 31.1 metres. This speaks to the potential for more mineralisation to be discovered at Mawson as the drilling footprint expands.  Pointer for 2021 work Legend managing director Mark Wilson said: “The 2020 field season has ended in spectacular fashion at Mawson with hole RKDD034 intersecting 43.1 metres of massive nickel-copper sulphide including one section of 31.1 metres of continuous massive mineralisation. “The scale of the massive mineralisation in this hole talks to the potential of Mawson. “The hole was designed to provide samples for phase 1 met testing, the results of which are expected in February next year. “Diamond hole RKDD033 has also provided a potentially significant pointer for work next year, with nickel-copper sulphide intersected within intrusive host rocks at a deeper level than previously drilled at Mawson.” Metallurgical test work The drill hole intersected an upper zone of mineralised intrusives interleaved with a metasedimentary package to 200.7 metres downhole. Massive nickel-copper zones were intersected at 105.1-105.45 metres, 133.15-134.1 metres, 134.7-138.7 metres and 167.05-172.55 metres downhole. From 200.7 metres to 231.8 metres, a zone of 31.1 metres of entirely massive nickel-copper sulphide was intersected. This zone was significantly thicker than that intersected in RKDD008. Two narrow zones of massive nickel-copper sulphide were identified below this thick intercept at 237.3-237.8 metres and 253.75-254.45 metres downhole. A total of 43.1 metres of massive nickel-copper sulphide was intersected in RKDD034, resulting in the thickest massive nickel-copper sulphide intercept at Mawson to date. This is complicated, however, due to the large stratigraphic conductors at Mawson effectively blinding down-hole transient electro-magnetic (DHTEM) visibility when proximal to these conductors. The drill hole will now be sampled for phase-1 metallurgical test-work on the massive sulphide domain RKDD033 Diamond drill hole RKDD033 was designed to test the northern extension of a strong 25,000-70,000S off hole conductor identified from drill hole RKDD025, and was initially drilled to a depth of 422.4 metres and subsequently extended to 522.8 metres. The intrusive package was variably mineralised, including a narrow zone of massive nickel-copper sulphide between 205.7-206.05 metres and a broad zone of disseminated nickel-copper sulphide between 254.5-315 metres downhole. A metasedimentary package below the intrusive package was cross-cut by the late-stage fault zone identified in previous drill holes, before intersecting further mineralised gabbronorite intrusive from 391.95-403.65 metres downhole. The mineralisation of this lower intrusive unit ranged from heavy disseminated to net-textured nickel-copper sulphide. This is a highly encouraging development as it is confirmation the mineralised intrusive package is present below the fault. DHTEM was completed in RKDD033 to a depth of 422.4 metres and modelling suggested the drill hole missed the main massive sulphide accumulation previously identified in RKDD023 and identified an off hole response associated with the nickel-copper sulphide zone below the fault. The drill hole was re-entered to extend the drill hole to allow for better constraining of the DHTEM feature associated with the lower sulphide zone. Extension of RKDD033 has been completed and additional DHTEM will now be undertaken. Mawson future programs The future programs planned for the prospect include: ➢Completion of DHTEM program on completed diamond drilling (DD) and reverse circulation (RC) drill holes. ➢ Phase-1 sighter metallurgical test-work on massive sulphide from RKDD034. ➢ Integration of DD, RC, aircore geochemical and geophysical datasets to evolve 3D emplacement model of Mawson, with new constrained gravity and magnetic inversions underway. ➢ Diamond and RC drill hole planning/design for 2021 field season.