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Diamond drilling underway to test high-grade nickel-copper targets at the Eastern Mafic complex in Western Australia

Mining News - Published on Tue, 19 Feb 2019

Image Source: Proactive Investors
Great Boulder Resources announced that drilling has started at the Eastern Mafic complex, part of the Company’s larger Yamarna Project in Western Australia. An initial diamond hole is being drilled into the Zermatt prospect to a target depth of 700m downhole (600m below surface). The drill hole is designed to test the core of the Eastern Mafic in an area considered prospective for high-grade nickel and copper mineralisation.

RC and diamond drilling will also test several deeper targets within the Eastern Mafic complex at the Cortina, Ben Lomond and ML13 prospects. The goal of the drilling program is 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.

Meanwhile, down-hole EM (“DHEM”) surveys will be completed on all drill holes. DHEM has successfully detected massive sulphide mineralisation over 200m from the drill hole in previous drilling and will be a key exploration tool in testing deeper targets at the Eastern Mafic.

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Posted By : Rabi Wangkhem on Tue, 19 Feb 2019
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