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Morck’s Well Project: updated drilling results

Published by , Assistant Editor
Global Mining Review,

Leading Australian copper producer Sandfire Resources NL (Sandfire) has received assay results for its Aircore (AC) drill holes which intersected narrow zones of sulfide and supergene copper mineralisation at the Morck’s Well Project in Western Australia. This project is part of its Farm-in with Auris Minerals Ltd (Auris) and Fe Ltd (Fe Limited).

Highlights included:

  • MWAC0109 11m at 3.5% Cu from 73 m including 3 m at 9.5% Cu from 81 m.
  • MWAC0111 6m at 1.3% Cu from 112 m including 1 m at 4.5% Cu from 113 m.
  • MWAC0112 9 m at 2.3% Cu from 146 m including 3 m at 5.7% Cu from 149 m.

According to Sandfire, the high-grade intersections returned from these AC holes are narrow, the overall tenor and grade of the mineralisation encountered is encouraging and supports continued exploration along this corridor. All intercept lengths are down hole, true widths are not known.

Morck’s Well is located 22 km southwest of the DeGrussa Copper Mine in Western Australia. The project area also extends into the Farm-in with Enterprise Metals Ltd (Enterprise). Sandfire is progressing a systematic and multi-pronged exploration programme across this corridor, with two additional Reverse Circulation (RC) drill-holes completed, each of which have also had Downhole Electromagnetic (DHEM) surveys completed.

Assay Results for Recent Sulfide Intersections

MWRC0002, which was collared in dolerite, intersected an upper sedimentary sequence consisting of interbedded mafic breccia, siltstone and basalt (55 – 196 m) before passing through a lower chlorite altered succession of intercalated siltstone and magnetite-rich chemogenic sediments with minor jasper (196 – 344 m). The drill hole was terminated in footwall dolerite (344 – 448 m). MWRC0003 was collared in the Auris farm-in tenure and entered into the Enterprise Farm-in tenure at roughly 70 m depth. The hole intersected siltstone (14 – 36 m) and dolerite (36 - 340 m) before penetrating the mafic breccia unit (340 – 419 m) and terminating in chloritically altered siltstone to EOH (419 - 448m). Assays for all RC holes completed on the project to date are pending. Geological logging has not identified any significant sulfide mineralisation.

Aircore drilling is also continuing on the Morck’s Well Project and along strike into the Enterprise Farm-In area. Morck’s Well is located south-west of Sandfire’s 100%-owned Homestead Prospect and the neighbouring Vulcan West Project (SFR-ENT farm-in).

The geological interpretation will be updated as exploration continues and will be used for further targeting in the area. Preliminary drilling has defined an area of geological interest that will be intensively targeted by AC, RC and diamond drilling, supported by multi-element geochemistry, surface and down-hole geophysics.

According to the company, Sandfire may earn a 70% interest in the Morck’s Well Project by the definition of at least 50 000 t of copper contained in a declared JORC Mineral Resource on which it completes a Feasibility Study. This Project forms part of Sandfire’s Greater Doolgunna Project, comprising of a package of 6276 km2 of contiguous tenements surrounding the DeGrussa Copper Mine.

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Australian mining news