Plus 90m Mineralised Intercept In Fraser Range Hole
Legend Mining Limited (ASX:LEG) has hit a large massive nickel- copper sulphide section in its latest diamond drillhole designed to test the 25,000-30,000S conductor at the Mawson Prospect within the Rockford Project, Fraser Range in Western Australia.
Legend Managing Director Mr Mark Wilson said the discovery of another 12.95m of massive nickel- copper sulphide in diamond drillhole 23, circa 200m from the previously announced massive sulphides, is a quantum boost for the potential of the Mawson Prospect.
“The nature of the mineralisation suggests we are closer to the intrusive source but we are not there yet. Downhole EM from this hole, which is now underway, is designed to provide data to assist in planning future diamond holes in this immediate vicinity.
“Importantly, the RC drilling confirms the Mawson intrusive complex extends north and east of the known Mawson nickel-copper sulphide mineralisation, confirming the prospectivity for mineralised intrusives below the eastern aircore geochemical anomaly. The RC holes are also a great platform for downhole EM.”
Diamond drillhole RKDD023 intersected a wide zone of Ni-Cu mineralisation over 90m in width downhole from 216.45m to 310.4m in an interleaved intrusive and metasedimentary assemblage, before finishing in metasedimentary package.
The massive Ni-Cu sulphide accumulations from 221.9-223.75m, 228.7-236.9m, and 237.8-240.7m downhole occur within the interleaved metasedimentary units, with distinctive brecciated margins, indicating sulphide mobilisation.
This textural observation, combined with the evidence of limited sulphide extension veining, suggested the mineralised zone intersected is remobilised and proximal to the intrusive source.
DHTEM is to be completed in RKDD023 to provide additional vectoring of the significant Ni-Cu mineralisation across the +90m mineralised zone.
Structural logging of RKDD023 will be undertaken before being sampled and submitted for assay.
A further 10 RC holes (RKRC018 – RKRC027) have been completed and assays received for 6 RC holes (RKRC015 – RKRC020) since the company’s last report on RC drilling activity in late July 2020.
RC drillholes RKRC015 through RKRC020 intersected a highly prospective package of mafic and ultramafic intrusives above a metasedimentary and mafic granulite package. High MgO ultramafic, gabbronorite, and olivine gabbronorite intrusives contained variable mineralisation, dominantly trace to disseminated, with minor net-textured sulphide.
Importantly, the RC drilling confirms the Mawson intrusive complex extends north and east of the Mawson Ni-Cu sulphide mineralisation, confirming the prospectivity for mineralised intrusives below the eastern aircore geochemical anomaly.