Intersects 43.1m Of Massive Nickel-Copper Sulphides
Legend Mining Limited (ASX:LEG) has reported positive observations from diamond drillholes RKDD033 and RKDD034 at the Mawson prospect within the Rockford Project, Fraser Range, Western Australia.
RKDD033 was designed to test the northern extension of the strong 25,000-70,000S off hole conductor identified from RKDD025. RKDD034 was drilled to provide a representative massive nickel-copper sulphide sample for Phase 1 metallurgical test work. The details of the observations are contained in the body of this report.
“The 2020 field season has ended in spectacular fashion at Mawson with hole RKDD034 intersecting 43.1m of massive nickel- copper sulphide including one section of 31.1m of continuous massive mineralisation,” Managing Director Mark Wilson said
“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.”
Diamond drillhole RKDD034 was designed as a twin of RKDD008 for Phase 1 metallurgical test work on a representative massive Ni-Cu sulphide domain of the mineralisation identified at Mawson.
The drillhole intersected an upper zone of mineralised intrusives interleaved with a metasedimentary package to 200.7m downhole. Massive Ni-Cu zones were intersected at 105.1m – 105.45m, 133.15m – 134.1m, 134.7m – 138.7m, 167.05m – 172.55m downhole. From 200.7m to 231.8m a zone of 31.1m of entirely massive Ni-Cu sulphide was intersected.
This zone of massive Ni-Cu sulphide was significantly thicker than that intersected in RKDD008 (three zones of 5.6m, 6.9m and 12.8m totalling 25.3m within a 48.3m interval). Two narrow zones of massive Ni-Cu sulphide were identified below this thick intercept at 237.3m – 237.8m and 253.75m – 254.45m downhole.
A total of 43.1m of massive Ni-Cu sulphide was intersected in RKDD034, resulting in the thickest massive Ni-Cu sulphide intercept at Mawson to date. This speaks to the potential for more mineralisation to be discovered at Mawson as the drilling footprint expands.
This is complicated however, due to the large stratigraphic conductors at Mawson effectively blinding DHTEM visibility when proximal to these conductors. The drillhole will now be sampled for Phase 1 metallurgical test work on the massive sulphide domain.
- Completion of DHTEM programme on completed DD and RC drillholes.
- 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 drillhole planning/design for 2021 field season.