Gold Fields Limited · JSE:GFI
Gold Fields — Technical Presentation (July 2014)
20 slides from Gold Fields's technical presentation, Jul 13, 2014
Slide 1: Australia Site Visits: A Brief Introduction To Orogenic Gold Deposits
Australia Site Visits: A Brief Introduction To Orogenic Gold Deposits CRAIG FEEBREY Vice President Exploration 13th July 2014
Slide 2: Forward looking statements
Forward looking statements Certain statements in this document constitute “forward looking statements” within the meaning of Section 27A of the US Securities Act of 1933 and Section 21E of the US Securities Exchange Act of 1934. In particular, the forward looking statements in this document include
Slide 3: Orogenic Deposits
Orogenic Deposits 1 Geological characteristics 2 Size and grade 3 Clusters and camps 4 Significant strike and depth extent 5 Deposits grow with time 6 Likelihood of development 7 St Ives and Agnew camps 8 Concluding remarks Australia Site Visits: A Brief Introduction To Orogenic Gold Deposits | Crai
Slide 4: Orogenic Deposits: Characteristics
Orogenic Deposits Characteristics ● A distinctive class of mineral deposit From Goldfarb et. Al., 2001 Australia Site Visits: A Brief Introduction To Orogenic Gold Deposits | Craig Feebrey | 13 July 2104 4
Slide 5: Ranking by Deposit Type
Orogenic Deposits Ranking by Deposit Type ● Account for 18% of the worlds gold endowment (deposits > 500koz) ● Continue to be a significant source of gold production Rank Type Gold (Moz) % Cum % 1 Paleoplacer Gold 3125 37 37 2 Orogenic 1523 18 55 3 Porphyry 1220 15 70 4 Placer Gold 713 8 78 5 Epithe
Slide 6: Ranking by Country
Orogenic Deposits Ranking by Country ● Australia accounts for 22% of gold endowment in orogenic deposits globally (deposits > 500koz) Rank Country Gold (Moz) % Cum % 1 Australia 339 22 22 2 Canada 238 16 38 3 Uzbekistan 167 11 49 4 USA 124 8 57 5 Russia 83 5 62 6 Zimbabwe 73 5 67 7 Ghana 72 5 72 8 M
Slide 7: What makes this style of mineralisation attractive as a business?
Orogenic Deposits What makes this style of mineralisation attractive as a business? ● They are well understood geologically ● They can be large and of good grade ● They occur in clusters at different scales providing mining flexibility and optionality ● They can have significant vertical and horizon
Slide 8: They can be large and of good grade
Orogenic Deposits They can be large and of good grade From Hagemann & Cassidy, 2000 Australia Site Visits: A Brief Introduction To Orogenic Gold Deposits | Craig Feebrey | 13 July 2104 8
Slide 9: Province Scale Clusters
Orogenic Deposits Province Scale Clusters ● 10 clusters > 5Moz Au ● 49 deposits > 1Moz Au ● Area selection is paramount! From Robert, F. et. al., 2005 Australia Site Visits: A Brief Introduction To Orogenic Gold Deposits | Craig Feebrey | 13 July 2104 9
Slide 10: St Ives Camp Scale Cluster
Orogenic Deposits St Ives Camp Scale Cluster ● 30 km strike ● 69 deposits with historic resources ● A 15.9Moz camp and growing! Australia Site Visits: A Brief Introduction To Orogenic Gold Deposits | Craig Feebrey | 13 July 2104 10
Slide 11: St Ives Camp Clusters
Orogenic Clusters St Ives Camp ● 80% of resources occur in 25% of deposits 2 250 2 000 Larger deposits are the company makers 1 750 Larger deposits reset the LoM clock 1 500 Smaller deposits sustain the operations Ounces (k) 1 250 Invincible discovery (as of Dec 2013 R & R) 1 000 750 500 250 0 Austr
Slide 12: Wallaby Open Pit, Granny Smith 2007
Orogenic Deposits Wallaby Open Pit Granny Smith 2007 Wallaby Open Pit Recovered Production 2001- Dec 2006 1,504,309 oz @ 3.44 g/t Zone 250 2007 Wallaby Underground Zone 60 288,322 metres drilled Zone 70 2007 Wallaby UG Reserve Zone 80 442,099 oz @ 5.0 g/t Cumulative Recovered 1.2km Zone 90 UG Produc
Slide 13: Wallaby Open Pit, Granny Smith 2010
Orogenic Deposits Wallaby Open Pit Granny Smith 2010 2010 Wallaby Underground 430,244 metres drilled Additional metres 2007-2010 Zone 250 141,922 metres Zone 60 Zone 70 2010 UG Reserve 604,772 oz @ 5.20 g/t Zone 80 Cumulative Recovered 1.2km UG Production 2004-2010 Zone 90 549,742 oz Zone 100 Additi
Slide 14: Wallaby Open Pit, Granny Smith 2013
Orogenic Deposits Wallaby Open Pit Granny Smith 2013 2013 Wallaby Underground 652,607 metres drilled Additional metres 20010-2013 Zone 250 222,363 metres Zone 60 Zone 70 2013 UG Reserve 838,431 oz @ 6.34 g/t Zone 80 Cumulative Recovered 1.2km UG Production 2004-2013 Zone 90 1,189,407 oz Zone 100 Add
Slide 15: Significant Depth and Strike Extent
Significant Depth and Strike Extent Agnew – Lawlers: New Holland – Genesis Resource New Holland Pit Genesis Pit S N NEW HOLLAND GENESIS Genesis 200 Series BATAVIA SHEBA Genesis 500 Series Genesis 600 Series Genesis 500 Series New Holland 500 Batavia 500 Series Sheba 500 Series Genesis 700 Series Ser
Slide 16: Significant Depth Extent
Significant Depth Extent Agnew – Lawlers: Waroonga Complex NORTH SOUTH Kath Upper Rajah Main South Main North 1.5 km Kath FBH Link Kim Australia Site Visits: A Brief Introduction To Orogenic Gold Deposits | Craig Feebrey | 13 July 2104 16
Slide 17: Deposits Grow with time and are step changers
Orogenics Deposits “Grow” with time and are “step changers” Relative Size (Year 15= 100%) 120% 100% 80% 60% Orogenic Porphyry 40% Epithermal 20% From Shodde, R., 2011 MinEx Consulting 0% 0 5 10 15 Years after Discovery 1.52Moz 2.62Moz 3.80Moz Oz Growth Caution: In given year figures are based only o
Slide 18: Are likely to be developed
Orogenic Deposits Are likely to be developed ● There have been 285 gold discoveries >100koz globally since 1994 ● Of these 285 discoveries, 29% are orogenics ● Of these 285 discoveries, 21% are in production ● Of those discoveries in production, 41% are orogenics! Australia Site Visits: A Brief Intr
Slide 19: Long lived operations
Orogenic Deposits Long lived operations St Ives Agnew 3.0 2.3 5.6 2.2 1.4 2.5 1.2 2.0 0.6 Ounces (Moz) Ounces (Moz) 1.0 0.4 - (1.0) (0.6) (2.0) (3.0) (4.0) (5.8) (1.6) (1.9) Reserves Production & Discovery & Reserves Reserves Production & Discovery & Reserves (F2002) Depletion Additions (C2012) (F20
Slide 20: Concluding Remarks
Orogenic Deposits Concluding Remarks ● Orogenic deposits are an important source of global gold production. ● Although known reserves characteristically do not extend much further than several years on any particular deposit, the nature of orogenic systems can provide companies with long lived, sust