Golden Cross Resources Ltd · ASX:GCR
Golden Cross Resources — Sydney Mineral Exploration Discussion Group (SMEDG) (March 2011)
61 slides from Golden Cross Resources's conference presentation, Apr 1, 2011
Slide 1: Copper Hill Porphyry Cu-Au Deposits
For personal use only Golden Cross Resources COPPER HILL PORPHYRY Cu-Au DEPOSITS Sydney Mineral Exploration Discussion Group SMEDG Sydney, Thursday, March 31, 2011 Kim Stanton-Cook GCR Managing Director
Slide 2: Acknowledgments
For personal use only Acknowledgments to David Timms, Chris Torrey, Robin Hee, Paul Burrell, Bret Ferris, Glenn Coianiz, Anne Eastwood, Chris Johnston, Natasha Jacobs, Pete White, Vladimir David, Rob Harley, Jonathan Hoye, Glenn Diemar, Eath Chhun, Steve Collins, Bob White, Dane Burkett, Neil Ruther
Slide 3: Disclaimer and Competent Person Statement
DISCLAIMER For personal use only This material contains certain forecasts and forward-looking information, including information about possible or assumed future performance, exploration results, resources or potential growth of Golden Cross Resources Ltd (GCR), industry growth or other trend projec
Slide 4: GCR Project Locations
unny Corner (Cu Pb Zn Au) Kempfield (8a Ac) 1000 km Adelaide Cullarin (cu Pb 2n Au) j™@® Lachlan Fold Belt = Curnamona Province @ Golden Cross Properties l@™ Bowen Basin © KER Acquisition * Galilee Basin ® Phosphate Farm-out mt Surat Sir © Joint Venture ‘@® Clarence-Moreton Basin @ Farmed out = Mt I
Slide 5: Tectonic setting of porphyry copper-gold mineralisation in the Macquarie Arc
Tectonic setting of porphyry copper-gold mineralisation in the Macquarie Arc R. A. GLEN, A. J. CRAWFORD, D. R. For personal use only COOKE The Ishihara Symposium: Granites and Associated Metallogenesis Geoscience Australia “GROUP 3: ~450-445 Ma porphyries constitute the Copper Hill Suite, emplaced a
Slide 6: Copper Hill: Regional Address
For personal use only 173 Mt @ 0.31% Cu & 0.26g/t Au Copper Hill: Regional Address
Slide 7: Copper Hill aerial view
Cadia 45 km to southeast Northparkes 80 km to northwest For personal use only Molong township Wattle Hill Copper Hill Boundary Buckley’s Hill Copper Hill, aerial view looking south
Slide 8: Copper Hill
Copper Hill For personal use only • Resources Block Model estimated by Hellman & Schofield: 173 million tonnes containing 0.53 million tonnes copper and 1.47 million ounces of gold. New Resource estimate soon and step-out drilling planned. • Copper Hill Igneous Complex of late- Ordovician calc-alkal
Slide 9: Copper Hill Exploration History
COPPER HILL EXPLORATION HISTORY • Discovered and mined around 1845 – 60m deep shafts, cross-cuts and For personal use only unsuccessful reverberartory furnace • 1850 – 1966 sporadic small scale mining • In the past forty years, the Copper Hill area and in particular the Copper Hill prospect has been
Slide 10: Copper Hill – Exploration
Copper Hill – Exploration For personal use only • Airborne magnetic & radiometric surveys • Induced Polarisation surveys • Geochemical surveys • Geological mapping and interpretations • Drilling – logging (lithologies, mineralisation, alteration, structure) assigning domains • Resource calculations
Slide 11: For personal use only
EL6615 (partial) EL6391
Slide 12: For personal use only
=. ene eee 340000 400008 330008 8SSE000N 6360008 ‘s30008 (65320008 [1 Random textured magnetic highs 2 (probably intrusions or 4é hornfelsed volcanics) 3 \* [—]_ Magnetic iows Y C1 provatiy aterec intrusion) 2 ° Lee 4é Areas of completely flat magnetic texture (Intense alteration or on magnetic intr
Slide 13: Magnetics and drill assay traces; IP and drill assay traces
For personal use only Magnetics and drill assay traces IP and drill assay traces
Slide 14: Copper Hill IP - Chargeability
Copper Hill IP - Chargeability For personal use only 2km
Slide 15: IP chargeability 100m below surface
100m below surface 1km
Slide 16: IP chargeability 200m below surface
200m below surface 1km
Slide 17: IP chargeability 300m below surface
300m below surface 1km
Slide 18: 3D IP Chargeability and Resistivity Model
For personal use only Plan of 3D IP Chargeability Model. Yellow 35, Red 45 mV/V. . .Resistivity Model. Red low to blue high resistivity. The green and blue area are coincident with the volcanics. Perspective section of 3D chargeability From: A new survey design for 3D IP inversion modelling at Coppe
Slide 19: 3D Chargeability IP model of Copper Hill
For personal use only 3D Chargeability IP model of Copper Hill with sensitivity controlling the colour saturation.. From: A new survey design for 3D IP inversion modelling at Copper Hill. R.M.S. White S. Collins R. Denne R. Hee P. Brown
Slide 20: Copper Hill X-Sections
5000E For personal use only 5000E <100m> 5500N 5300N 5000E Copper Hill X-Sections Barren dyke corresponding with low IP chargeability 5100N
Slide 21: Greg Corbett's Evolving Porphyries
For personal use only Greg Corbett’s Evolving Porphyries
Slide 22: Copper Hill Magnetics, Sections
Carbonate (SCC) — eee ‘ NS i M4 *\ Y A), vm | 4 Val ft > an VV at Creek “ Copper Hill Magnetics, Sections
Slide 23: Copper Hill Igneous Complex
For personal use only Copper Hill Igneous Complex
Slide 24: Greg Corbett photographs
Greg Corbett photographs For personal use only Sheeted laminated quartz- Stockwork B veins in intrusion F magnetite-sulphide (M style) veins DDH 107 214m within intrusion F - DDH107, 257 m. Sheeted B veins in sericite altered C vein style sulphides overprinting intrusion F. Note the central laminate
Slide 25: Greg Corbett photographs: vein styles
For personal use only Later sulphides overprint laminated Early chlorite-magnetite alteration cut by and B veins – DDH 64 130m later sulphides of a C vein style – DDH 74 248m. Sulphide fill breccia of a C vein Pyrite-rich D vein with later carbonate - type- DDH 107 232m. DDH 74 245m
Slide 26: Paul Ashley's Petrographic Studies
For personal use only Paul Ashley’s Petrographic Studies
Slide 27: GCHR064 62.8 m TS
GCHR064 62.8 m TS Summary: Porphyritic dacite (or microtonalite porphyry) originally containing phenocrysts of plagioclase, ferromagnesian phases, quartz and microphenocrysts of FeTi oxide in a fine grained quartzofeldspathic groundmass. The rock has undergone strong and pervasive hydrothermal alter
Slide 28: GCHR064 76.6m PTS
re; yo hapa ree GCHR064__—76.6m PTS Summary: Very strongly altered porphyritic dacite (or microtonalite porphyry) with local veining. The original rock contained scattered plagioclase, ferromagnesian and quartz phenocrysts, with a few microphenocrysts of FeTi oxide and apatite in a fine grained quar
Slide 29: For personal use only
For personal use only
Slide 30: GCHR064 118.4 m PTS
GCHR064 118.4 m PTS Summary: Mostly hydrothermal vein infilling with minor retention of highly altered screens of host rock. It is likely that the host rock (presumably porphyritic dacite or similar, but no relict texture preserved) was initially intensely altered to assemblages ranging from hydroth
Slide 31: GCHR064 134.75 m PTS
GCHR064 134.75 m PTS Summary: Contact between fine grained porphyritic dacite and microtonalite porphyry, with both rock type displaying strong hydrothermal alteration and veining. It is possible that the dacite could be an enclave in, or a dyke in, the microtonalite porphyry, although the actual co
Slide 32: GCHR107 206.05 m TS
GCHR107 206.05 m TS Summary: Strongly porphyritic dacite, with relict quartz phenocrysts and pseudomorphs aiter former phenocrysts of plagioclase and ferromagnesian material in a very fine grained quartzofeldspathic groundmass. There has been very strong pervasive hydrothermal alteration of phyllic
Slide 33: GCHR107 216.8 m PTS
GCHR107 216.8 m PTS Summary: Very strongly hydrothermally altered porphyritic intermediate to felsic igneous rock with abundant veining. The original rock may have contained phenocrysts of feldspar and ferromagnesian material in a fine grained quartzofeldspathic groundmass. There may have been initi
Slide 34: Chalcopyrite mass with gold inclusion
= = O @ D 3 © = 9 D KS @ a. — O LL Fig. 42: Portion of coarse chalcopyrite mass with a small composite inclusion of gold (pale yellow) and sphalerite (mid-grey). Gold grain is about 10 microns across. Plane polarised reflected light, field of view ~0.2 mm across.
Slide 35: GCHR107/353.05 m sulphide aggregate
Fig. 45: GCHR107/353.05 m: Sulphide composite aggregate associated with quartz (dark grey) in breccia matrix. The sulphides include pyrite (pale creamy), chalcopyrite (yellow), sphalerite (mid-grey) and galena (pale grey). Two grains of gold (pale yellow) are at a galena- sphalerite contact. Plane p
Slide 36: Copper Hill Geological/Mineral/Alteration Domains
Copper Hill Geological/Mineral/Alteration DOMAINS For personal use only • Mineralising Tonalite Porphyry - mineraliser domain • Position – central top of area enclosed by pit shell, directly below the supergene zone. • Rock host – mainly MTP, some andesitic volcanics and TP dykes • Mineralisation st
Slide 37: CTP/carapace and argillic domains
• CTP/carapace domain • Position – below the MTP-mineraliser domain Rock host – mainly CTP, some MTP, TP dykes and andesitic volcanic For personal use only • • Mineralisation style - moderately dense to sparse veining – ‘B’ veins, ‘C’ veins and ‘D’ veins. Disseminated cpy and py also. • C veins – wh
Slide 38: Mineralised breccia and other domains
• Mineralised breccia domain • To date, only intersected at Wattle Hill. Estimated volume of total ore tonnage ~1%. • For personal use only • Mixed tonalite porphyry/andesitic volcanic domain • Position – north-western part of the deposit. A discontinuous domain from 5200N to 6200N (local grid). Typ
Slide 39: Soil Geochemistry
For personal use only Soil Geochemistry
Slide 40: Copper Hill Drilling 2010 and into 2011: New Zones
COPPER HILL DRILLING 2010 and into 2011 For personal use only NEW ZONES Buckley’s Hill Extensions & Wattle Hill Infill & Deeps
Slide 41: Buckley's Hill Extensions
COPPER HILL DRILLING 2010 and into 2011 For personal use only Buckley’s Hill Extensions +200m wide near surface +480m wide at depth Drill intervals of: 486m @ 0.33% Cu 283m @ 0.23%Cu with 66m @ 0.6% Cu 108m @ 0.43% Cu + gold credits OPEN ALONG STRIKE & DEPTH
Slide 42: Buckley's Hill, Section 6150N
200 metres Buckley’s Hill, Section 6150N • Big & expanding zone indicated For personal use only • Copper and gold grades remain elevated and above average. • Substantial extensions indicated along strike to the northwest • Step-out core drilling to begin immediately. • Cross-sections both north and
Slide 43: Buckley's Hill drill sections
Open, next section 6250N to be drilled For personal use only 6200N 283m @ 0.23% Cu 6150N 313m @ 0.25% Cu 6100N 6050N 190m @ 0.42% Cu 6000N 106m @0.31% Cu (Shallow holes) 486 m @ 0.33% Cu
Slide 44: 6000N
6000N A quick tour is coming….. For personal use only Fill in the gaps, imagine what results could be achieved when GCR drills between the red lines marking out the 6150N zone
Slide 45: For personal use only
- 6000 000s — - 4875 Si8r — - 4750 Osh Ajuo sn feuosied JO3
Slide 46: For personal use only
- 5000 + 4875 - 4750 0005 — NS S Sey, SZ8r — OsZr — Ajuo sn jeuosied JO3
Slide 47: For personal use only
— 4750 OSZr —] Ajuo sn jeuosied JOS
Slide 48: 6200N
For personal use only 6200N
Slide 49: For personal use only
— §000 000s 5 — 4875 S28" A Ajuo sn feuosied JO3
Slide 50: Wattle Hill Infill & Deeps
COPPER HILL DRILLING 2010 and into 2011 For personal use only NEW ZONES Wattle Hill Infill & Deeps 73m @ 0.45% Cu, 0.42g/t Au 85m @ 0.39% Cu, 0.82g/t Au 101m @ 0.21% Cu 26m @ 0.5g/t Au + High grade NW plunging zone carrying 3m @ 2.48% Cu 8m @ 3.72% Cu
Slide 51: Wattle Hill Drilling
WATTLE HILL DRILLING For personal use only • GCHR315 confirms and extends the intercepts in drill hole CHM18 of 26 metres @ 0.5g/t gold from 2 metres and 20 metres @ 0.32g/t gold from 74 metres. • The 3m @2.48% copper at 82 metres down-hole may correlate with the zone of 8m @ 3.72% copper in GCHR249
Slide 52: Oxide Resource Drilling – Stage
For personal use only Oxide Resource Drilling – Stage 1
Slide 53: Oxide Resource Program – best gold results
Copper Hill Oxide Resource Program – best gold results Significant gold results at a 0.3g/t cut-off grade For personal use only Hole ID Easting Northing From (m) Interval (m) Copper % Gold g/t GCHR354 674696 6341363 0 16 0.23 0.83 GCHR365 674656 6341337 0 48 0.27 1.00 GCHR389 674555 6341216 2 42 0.0
Slide 54: Oxide Resource Drilling Gold grade x thickness contours
For personal use only Oxide Resource Drilling Gold grade g/t x thickness contours
Slide 55: Oxide Resource Program – best copper results
Copper Hill Oxide Resource Program – best copper results Significant copper results at a 0.2% cut-off grade For personal use only Hole ID Easting Northing From Interval Copper % Gold g/t GCHR400 674346 6341409 0 22 0.97 0.77 GCHR404 674213 6341376 14 14 1.55 0.46 GCHR410 674359 6341396 0 31 0.81 1.8
Slide 56: Oxide Resource Drilling Copper grade x thickness contours
For personal use only Oxide Resource Drilling Copper grade % x thickness contours
Slide 57: GCHR312 & GCHR313 Metallurgical Holes
GCHR312 & GCHR313 Metallurgical Holes confirm and extend higher grade zones at Copper Hill GC H R31 2 bulk interval* 143metres @ 0.57% copper and 0.7 g/t gold and, using a 0.2% copper cut-off, Interval (m) Copper (%) Gold (g/t) From (m) 67 0.79 0.93 T including 23 0.97 0.32 23 16 1.41 2.39 60 70 0.4
Slide 58: The Copper Hill Resource at 0.2% copper cut-off
The Copper Hill Resource at a cut-off grade of 0.2% copper Note:The Measured, Indicated and Inferred Resource Estimates are reported under the 2004 JORC Code and Guidelines. For personal use only Search parameters for the categories as follows: Measured = 40m x 45m x40m (min 12 data); Indicated = 60
Slide 59: Resource by mineralisation zone
Primary mineralisation comprises 96% of the resource (tonnage) with 2% supergene and 2% oxide copper, as shown below: The resource estimates were performed using ordinary kriging, constrained above and below the base of oxidation For personal use only and either side of the Western Fault, but otherw
Slide 60: Copper Hill Mine - Critical Issues
Copper Hill Mine - Critical Issues For personal use only • Preliminary open pit, mine infrastructure, ROM pad, waste dump, and tailings dam designs in progress • Metallurgy/Processing test-work continuing Under consideration: • Capex & Financing • Property purchases • Water entitlements • Regulatory
Slide 61: Copper Hill – the next major copper-gold porphyry mine in NSW
Cadia 45 km to southeast Molong township P ow er: 132 K v Sub-station For personal use only 4.5 km Wattle Hill Copper Hill Outcropping mineralisation, low strip ratio Buckley’s Hill Plant & Mill Site Copper Hill – the nex t m ajor copper- gold porphyry m ine in NSW ASX - GCR
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