Redstone Resources Limited · ASX:RDS
Redstone Resources — AIG 2007, Perth
32 slides from Redstone Resources's conference presentation, June 2007
Slide 1: The West Musgraves: A Potential World-Class Ni-Cu-PGE Sulphide and Iron Oxide Cu-Au Province?
THE WEST MUSGRAVES: A POTENTIAL WORLD-CLASS NI-CU-PGE SULPHIDE AND IRON OXIDE CU-AU PROVINCE? I.M. Groves for D.I Groves, I.M. Groves, S. Gardoll, W. Maier & F.P Bierlein Redstone Resources and Centre for Exploration Targeting, UWA AIG 2007, Perth, June 2007
Slide 2: The West Musgraves: A Frontier Terrane
THE WEST MUSGRAVES: A FRONTIER TERRANE • One of the last frontiers for mineral exploration in Australia • Remote location in central Australia • Most prospective ground is under cover despite mineral occurrences known since 1950s • Access for exploration companies difficult in past due to restrictio
Slide 3: Location - Lithospheric Triple Point Junction
LOCATION - LITHOSPHERIC TRIPLE POINT JUNCTION Redstone Resources 7300km2
Slide 4: Geological History of West Musgraves
GEOLOGICAL HISTORY OF WEST MUSGRAVES • Probable Archaean or Palaeoproterozoic lithosphere • ca 1600 – 1300 Ma amphibolite to granulite facies para- and ortho-gneisses • Protoliths metamorphosed during Musgrave Orogeny ca 1200 – 1120 Ma • Emplacement of Bushveld-scale layered Giles Complex at ca 1080
Slide 5: Outcrop Map of West Musgraves - GSWA
OUTCROP MAP OF WEST MUSGRAVES - GSWA
Slide 6: Musgraves – Mineral Occurrences
MUSGRAVES – MINERAL OCCURRENCES MULTIPLE MINERALISATION STYLES WITH WORLD-CLASS ANALOGUES
Slide 7: Musgraves – Conceptual Model
MUSGRAVES – CONCEPTUAL MODEL Wingellina Babel Nebo 50 km
Slide 8: Opportunity – Geochemistry
OPPORTUNITY – GEOCHEMISTRY 90% of Region Covered by Shallow Sand, Calcrete and Colluvium, Limiting Exploration in the 50s and 60s
Slide 9: Geology of Nebo & Babel Deposits
GEOLOGY OF NEBO & BABEL DEPOSITS From Seat et al (2007)
Slide 10: 3D Model of Nebo & Babel Deposits
3D MODEL OF NEBO & BABEL DEPOSITS From Seat et al (2007)
Slide 11: Cross Section Through Nebo Showing Massive Sulphide
CROSS SECTION THROUGH NEBO SHOWING MASSIVE SULPHIDE From Seat et al (2007)
Slide 12: Geochemistry of Nebo & Babel Deposits Showing High Zr
GEOCHEMISTRY OF NEBO & BABEL DEPOSITS SHOWING HIGH Zr (HIGHLY FRACTIOANTED) From Seat et al (2007)
Slide 13: Musgraves – Blackstone “Saturn”
MUSGRAVES – BLACKSTONE “SATURN” Wingellina Babel Nebo 50 km
Slide 14: Es69/1389
Es69/1389
Slide 15: Geochemical Targets Blackstone/Tollu
GEOCHEMICAL TARGETS BLACKSTONE/TOLLU Titan North Cu 10km
Slide 16: Instant Geochemistry - XRF
INSTANT GEOCHEMISTRY - XRF
Slide 17: Halleys Cu Geochemistry and Aeromagnetics (RMC Farm-In)
HALLEYS Cu GEOCHEMISTRY AND AEROMAGNETICS (RMC FARM- IN) > 500ppm Cu > 300ppm Cu > 200ppm Cu > 120ppm Cu 1 km
Slide 18: PGE Geochemistry of Halleys Gossan
PGE GEOCHEMISTRY OF HALLEYS GOSSAN
Slide 19: Drilling Results - Halleys
DRILLING RESULTS - HALLEYS 50m Large thickness (>74m) of disseminated Cu-PGE rich sulphides in fractionated Zr rich intrusion
Slide 20: Analogy with Platreef of Bushveld Complex
ANALOGY WITH PLATREEF OF BUSHVELD COMPLEX Adapted from Kinaird (2005)
Slide 21: Layered Intrusion Deposit Styles
LAYERED INTRUSION DEPOSIT STYLES
Slide 22: Interpretation of Halleys Results
INTERPRETATION OF HALLEYS RESULTS • Nebo-Babel system high Ni:Cu ratio (1:1 for disseminated and blebby type ores, higher for massive sulphide - Seat et al. 2007) relative to Halleys Ni:Cu ratio of 0.2:1 • Halleys may represent fractionated high tenor sulphide system in high flow-through zone along
Slide 23: Conceptual Model – Plan View of Saturn
CONCEPTUAL MODEL – PLAN VIEW OF SATURN Younger Fractionated Intrusion S - Saturated Older layered Intrusion S – Unsaturated
Slide 24: Conceptual Model
CONCEPTUAL MODEL B Section A • Concentration of sulphide droplets on intrusion margin – turbulent flow zone • Partial crystallization of Fe-Ni rich MSS • Continued flow of residual Cu- PGE rich sulphide liquid along intrusion margin • Progressive deposition along flow through zone (Halleys, Titan et
Slide 25: Model – IOCG (Fe-Oxide Cu-Au)
MODEL – IOCG (Fe-OXIDE Cu-Au) WORLD-CLASS POTENTIAL
Slide 26: Structural / Intrusive Corridor
STRUCTURAL / INTRUSIVE CORRIDOR
Slide 27: Comparison of West Musgraves & Carajas
COMPARISON OF WEST MUSGRAVES & CARAJAS CARAJÁS PROVINCE - BRAZIL WEST MUSGRAVE GEOLOGICAL SETTING ANALOGOUS TO WORLD-CLASS CARAJÁS IOCG PROVINCE
Slide 28: Detailed Aeromagnetic Survey Baggaley
DETAILED AEROMAGNETIC SURVEY BAGGALEY 10km
Slide 29: Baggaley Hill Iron Oxide Copper Gold Targets (IOCG) over Detailed TMI Aeromagnetics
BAGGALEY HILL IRON OXIDE COPPER GOLD TARGETS (IOCG) OVER DETAILED TMI AEROMAGNETICS 5km
Slide 30: Baggaley Hills – Cu-Au (IOCG) or Ni-Cu
BAGGALEY HILLS – Cu-Au (IOCG) or Ni-Cu GRAVITY IMAGE BAGGALEY HILLS GRAVITY IMAGE OLYMPIC DAM Coincident bulls-eye gravity and magnetic high Geophysical response similar to Olympic Dam and Prominent Hill COINCIDENT GRAVITY / MAGNETIC ANOMALY OLYMPIC DAM ANALOGUE
Slide 31: Summary
SUMMARY • West Musgraves is one of the last frontiers for exploration in Australia • It is a unique tectonic environment at the triple-point junction of three cratons • Despite limited exploration, potentially world-class Ni-Cu-PGE sulphide deposits and Ni laterite deposits are already known • Recen
Slide 32: Summary
SUMMARY • First Pass exploration by Redstone identifies numerous geochemical anomalies above thick zones of disseminated magmatic sulphides (on ground since August 2006) • Further exploration is expected to confirm the potential of the West Musgraves for magmatic Ni-Cu-PGE and IOCG deposits