Hillgrove Resources Limited · ASX:HGO
Hillgrove Resources — 11th SA Exploration and Mining Conference (December 2014)
19 slides from Hillgrove Resources's conference presentation, Dec 5, 2014
Slide 1: Kanmantoo Copper Mine "Primary to Oxide"
KANMANTOO COPPER MINE “PRIMARY TO OXIDE” HAYDEN ARBON IIIII MINE GEOLOGIST BEN ALEXANDER IIIII METALLURGICAL SUPERINTENDENT 5 DECEMBER 2014
Slide 2: Kanmantoo Copper Mine and Lease Areas
KANMANTOO COPPER MINE AND LEASE AREAS 100%-owned by Hillgrove 55km from Adelaide, South Australia Mining Lease is within 500km2 exploration Exploration license, and relatively unexplored Area EL4401 Kitticoola Organic growth potential considered high Prospect Project enjoys infrastructure
Slide 3: Kanmantoo Copper Mine – Summary of Operation
KANMANTOO COPPER MINE – SUMMARY OF OPERATION Historic copper mining area from 1840’s BH South developed and operated open pit mine and plant from 1971 to 1976 HGO acquired leases in 2004, resource development 2005-08, feasibility and construction 2009-11, initial production December 2011 Cur
Slide 4: Kanmantoo Mine – Orebody and Site Layout
KANMANTOO MINE – OREBODY AND SITE LAYOUT Cross section through main Kanmantoo orebody with interim Kavanagh pit and final Giant pit (above) Plan view of all Kanmantoo pits (right) Note: Giant will include Kavanagh, Spitfire, Falcon, Lean, Matthew and Valentine 4
Slide 5: Kanmantoo Geology – Geological Context
KANMANTOO GEOLOGY Geological Context Located in Adelaide Fold Belt Early Cambrian Kanmantoo Group Metasediments Deposit hosted in the Tapanappa Formation – longest formation in the Kanmantoo Group Several deformation stages related to Delamerian orogeny Same metasediment formation host as
Slide 6: Kanmantoo Geology – Lithology
KANMANTOO GEOLOGY Lithology Regionally hosted in Biotite Schist (BS) Mineralisation hosted in a 6km wide Fe rich pelite (GABS) Staurolite with minor Muscovite also present Main zone mineralisation hosted in chlorite alteration (BGCS) Deposit Fe-rich; Na/Ca-poor Magnetite in particularly
Slide 7: Kanmantoo Geology – Mineralisation
KANMANTOO GEOLOGY Mineralisation Most likely epigenetic, though a SEDEX system is still argued Fe-rich fluid metasomatism Mineralisation usually hosted in stockwork vein selvages or podiform lenses Hosted commonly in quartz veins, but also magnetite/chlorite rich fluid intrusions Likely to
Slide 8: Kanmantoo Geology – Mineralogy - Oxides
KANMANTOO GEOLOGY Mineralogy - Oxides ‘Oxides’ encountered at shallow depths are predominately the Cu- carbonate malachite Azurite is also common in higher grade areas Atacamite, Cu in magnesium oxides, and Cu sulphates are minor occurrences 8
Slide 9: Kanmantoo Geology – Mineralogy - Primary
KANMANTOO GEOLOGY Mineralogy - Primary Most common Cu-bearing sulphide mineral is chalcopyrite Others include chalcocite, covellite and rare bornite Pyrite is mostly ubiquitous, transitioning to pyrrhotite at depth Rare galena and sphalerite along Cp with bismuth Silver and gold (usually i
Slide 10: Oxide / Transitional Processing
OXIDE / TRANSITIONAL PROCESSING INTRODUCTION Started processing primary sulphide copper (chalcopyrite) ore November 2011 Low cost capital throughput improvement projects have resulted in accelerated processing rates (2.4 to 3.2 Mtpa) 1.2 Mt of high grade copper oxide / transitional ore (sulphi
Slide 11: Primary to Oxide – Primary Ore
PRIMARY TO OXIDE PRIMARY ORE Primary copper sulphide ore is coarse grained chalcopyrite with fast flotation kinetics (P80 -212um) Kanmantoo Mineral Resource (Feb 13) 31.30Mt @ 0.78% Copper, 0.20 g/t Gold, 2.11 g/t Ag Ore beneficiation via two stage crushing, SAG milling, standard flotation wit
Slide 12: Primary to Oxide – Oxide / Transition Ore
PRIMARY TO OXIDE OXIDE / TRANSITION ORE Extensive metallurgical testwork undertaken – 4 in-depth studies completed Operational parameters and modified process flow sheet developed Comminution - Oxide ore less competent, exhibits slight rheology difference Flotation – Controlled Potential Sul
Slide 13: What Is Controlled Potential Sulphidisation (CPS)?
WHAT IS CONTROLLED POTENTIAL SULPHIDISATION (CPS)? Sulphidise the copper oxide mineral surface (provide a copper sulphide layer) Sodium Hydrosulphide (NaHS) employed as sulphidising agent Process involves a sulphidising or conditioning stage followed by collector addition and flotation Sulph
Slide 14: Oxide Process Flow Design
OXIDE PROCESS FLOW DESIGN Config 65 oxide (2) FLOAT FEED ROUGHER 0 ROUGHER 1 / SCAV 1‐2 SCAVENGER 1‐2 SCAVENGER 4‐7 SCAVENGER 8‐12 OK100TC CONDITIONING CONDITIONING CONDITIONING CONDITIONING TANK 1 TANK 3 TANK 4 TANK 2 CLEANER 1‐4 CLEANER 5‐10 FINAL TAIL CONDITIONING FINAL TANK 5 CONCENTRATE 14
Slide 15: Transitional Process Flow Design
TRANSITIONAL PROCESS FLOW DESIGN Config 65 oxide (2) FLOAT FEED ROUGHER 0 ROUGHER 1 / SCAV 1‐2 SCAVENGER 1‐2 SCAVENGER 4‐7 SCAVENGER 8‐12 OK100TC CONDITIONING CONDITIONING CONDITIONING CONDITIONING TANK 1 TANK 3 TANK 4 TANK 2 CLEANER 1‐4 CLEANER 5‐10 FINAL TAIL CONDITIONING FINAL TANK 5 CONCENTRATE
Slide 16: Processing Plant
II HILLGROVE KANMANTOO COPPER MINE RESOURCES PROCESSING PLANT
Slide 17: Key Contacts
KEY CONTACTS For further information please contact: Greg Hall, CEO and Managing Director Suite 1709 Australia Square Level 17, 264 George Street Sydney NSW 2000 E: info@hillgroveresources.com.au T: 61 2 8247 9300 17
Slide 18: Competent Person Statements
COMPETENT PERSON STATEMENTS Kanmantoo Global Mineral Resource Estimate at End February 2013 ABOUT HILLGROVE JORC 2012 Tonnage Cu Au Ag Classification (Mt) (%) (g/t) (g/t) Hillgrove is an Australian mining company Measured 2.63 0.88 0.10 1.95 listed on the Australian Securities Exchange In Situ Resou
Slide 19: Disclaimer – Important Notice
DISCLAIMER – IMPORTANT NOTICE No representation or warranty is or will be made by any person (including Hillgrove Resources Limited ACN 004 297 116 (“Hillgrove”, “HGO”, or the “Company”) and its officers, directors, employees, advisers and agents) in relation to the accuracy or completeness of all o
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