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Greenfields Exploration Lake Mackay Joint Venture Legend 585,200mE IGO 2017 Diamond Drilling Collar/Hole Trace IGO Previous RC Drilling Collar Hole Trace Pierce Point (Note: All widths are down hole) DHEM Plate MLEM Plate Geology Metasediment Gneiss Amphibolite Breccia Sulphides Stringer Sulphides Planned 200mRL OmRL 200mRL 0 17GRDD006 Awaiting Results 200 metres NEA 585,500mE 17GRDD006 17GRDD002 Awaiting Results 640m 17GRDD004 Awaiting Results 16GRRC011 1m @0.9g/t Au, 3.9% Cu and 5m @0.4g/t Au, 2.7% Cu 17GRDD002 17GRDD004 586,000mE 16GRRC009 17GRDD001 6m 9.0g/t Au, 1.5% Cu 586,400m 1m @3.0git Au, 3.1% Cu and 1m @2.1g/t Au, 1.3% Cu and 1m 1.2git Au, 1.4% Cu and 2m @4.5g/t Au, 1.2% Cu 16GRRC007 and 4m incl. 3m @ 13.9g/t Au, 1.3% Cu 3.8g/t Au, 1.9% Cu 600mRL 17GRDD005 16GRRC011 214m 220m 1810 100m 427m 450m 478m 490m 17GRDD001 11.4m @ 7.9g/t Au, 0.8% Cu incl. 3.5m @ 18.3g/t Au, 1.1% Cu and 14.4m @ 1.8g/t Au, 1.1% Cu incl. 2m @7.2g/t Au, 0.2% Cu 600 REGO 16GRRC008 16GRRC001 178m 130m 208m 16GRRC003 16GRRC006 Surface 16GRRC001 2m @ 2.3g/t Au, 0.2% Cu and 1m @1.9g/t Au, 0.3% Cu 16GRRC008 1m @ 1.2g/t Au, 0.9% Cu and 1m @ 4.1g/t Au, 1.1% Cu 244m 10m @ 1.6g/t Au, 1.1% Cu and 9m 1.8g/t Au, 3.3% Cu and 5m @1.1g/t Au, 4.6% Cu 16GRRC010 9m @ 5.2g/t Au, 1.4% Cu incl. 2m 14.0g/t Au, 2.0% Cu and 3m @ 2.6g/t Au, 0.2% Cu incl. 1m 4.9g/t Au 0.1% Cu 17GRDD003 Awaiting Results 16GRRC005 4m 0.8g/t Au, 1.1% Cu and 1m @0.9g/t Au, 1.1% Cu and 1m @1.8g/t Au, 0.7% Cu 17GRDD005 Awaiting Results 586,000mE 586,400mE igo 7,200km² of underexplored tenure 200m RL OmRL • • 400km north east of Alice Springs Proterozoic gold and base metals Continental-scale geophysical gravity ridge Central Australian Suture Grapple Prospect drilling update(1) 200m RL Assay results received from first diamond drill hold 17GRDD001 include: - 11.4m @ 7.9g/t Au, 20.7g/t Ag, 0.8% Cu, 1.1% Zn, 0.5% Pb and 0.1% Co from 284.9m 14.4m @ 1.8g/t Au, 6.0g/t Ag, 1.1% Cu, 0.3% Zn and 0.1% Pb from 348m A 5th hole intersected two sulphide zones 100m along strike to the east 1) 585,200mE 585,600mE Refer to ASX dated 18 Sep 2017: Lake Mackay JV - Grapple Prospect Drilling Update 35 35

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