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Great Boulder Resources commences diamond drilling at Eastern Mafic targeting deep feeder zone

Published: 22:38 17 Feb 2019 GMT

Prospect location map over 1VD Gravity image and previous RC/Diamond drill hole locations
Drilling will then shift to the Cortina, Ben Lomond and ML13 prospects

Great Boulder Resources Ltd (ASX:GBR) has commenced diamond drilling at the Eastern Mafic complex within the Yamarna Project in Western Australia.

Four diamond drill holes are planned to penetrate deep into the mafic complex at Zermatt, Cortina, ML 13 and Ben Lomond.

Drilling is targeting a possible nickel-copper feeder zone to the Eastern Mafic complex at depth.

High-grade nickel sulphide deposits are typically located in conduit systems of large mafic complexes, such as Nova-Bollinger, Voisey’s Bay and Nebo-Babel.

READ: Great Boulder Resources prepares for deeper drilling of nickel-rich Eastern Mafic target

The drill program aims to identify additional mafic intrusions with high-tenor nickel and copper sulphide mineralisation, which are key to the formation of high-grade sulphide deposits.

Drilling will also test the modelled extents of the Eastern Mafic complex and try to identify the base of the intrusion where accumulations of massive sulphide mineralisation may form.

Down-hole EM also planned

Down-hole electromagnetics (DHEM) surveys will be completed on all drill holes.

DHEM has successfully detected massive sulphide mineralisation over 200 metres from the drill hole in previous drilling and will be a key exploration tool in testing deeper targets at the Eastern Mafic.

First hole at Zermatt underway

The drill hole at Zermatt is planned as a 510-metre diamond tail off a 190-metre existing RC hole, reaching a target depth of 700 metres downhole and 600 metres below surface.

Great Boulder Resources speaks to Proactive at Resourcing Tomorrow 2023

Great Boulder Resources Ltd (ASX:GBR) Managing Director Andrew Paterson speaks to Thomas Warner from Proactive on the sidelines of Resourcing Tomorrow 2023. Resourcing Tomorrow 2023 is Europe's largest mining event, taking place from November 28 to 30 at the Business Design Centre in London.

on 28/11/23