Petra Diamonds Limited · LSE:PDL
Petra Diamonds — Botswana Resource Conference 2012
33 slides from Petra Diamonds's conference presentation, Jun 26, 2012
Slide 1: Rediscovering the Diamond Potential of the Kalahari
Rediscovering the Diamond Potential of the Kalahari Jim Davidson, Technical Director Petra Diamonds
Slide 2: Important Notice
Important Notice These Presentation Materials do not constitute or form part of any invitation, offer for sale or subscription or any solicitation for any offer to buy or subscribe for any securities in the Company nor shall they or any part of them form the basis of or be relied upon in any manner
Slide 3: Discover Petra Diamonds
Discover Petra Diamonds • The largest quoted pure diamond mining group (LSE: PDL) – member of FTSE 250 • One of the world’s largest diamond resources at +300 million carats • Diversified portfolio – five major kimberlite mines and three fissure mines in production • Exceptional growth – objective to
Slide 4: Proven Track Record – Continuous Growth
Proven Track Record – Continuous Growth Gross Production Profile Gross Revenue Profile Strong US$ Finsch Mcts production million contribution growth due boosts 2.5 to Finsch revenue acquisition 350 * Recovery * 2.0 300 in rough diamond Major increase prices & due to higher 250 Decreased sale of 507
Slide 5: A Diversified Portfolio
A Diversified Portfolio • Focus on Africa – source of 60% of the world’s diamonds by value • Eight producing mines – provides flexibility in terms of portfolio performance • Kimberlite exploration programme in Botswana 5
Slide 6: Focus On Botswana
Focus On Botswana • Africa’s premier mining jurisdiction • World’s largest diamond producer by • value Superb geological prospectivity ¯ • Stable politically and attractive fiscal ! Maun Gweta regime ! Toteng ! Francistown • Easy logistics ! Orapa ! Letlhakane ! CKGR • Transparent land tenure system
Slide 7: Historical Precious Stones Licences - 1983
Historical Precious Stones Licences - 1983 7
Slide 8: Historical Precious Stones Licences - 1989
Historical Precious Stones Licences - 1989 8
Slide 9: Historical Precious Stones Licences - 1990
Historical Precious Stones Licences - 1990 9
Slide 10: Historical Precious Stones Licences - 1996
Historical Precious Stones Licences - 1996 10
Slide 11: Historical Precious Stones Licences - 2004
Historical Precious Stones Licences - 2004 Areas held under Reconnaisance Permits, Prospecting Licences and Mining Leases as at 26th July, 2004 22.000000 26.000000 -18 .000000 -18 .000000 PL99/99 PL10 0/99 PL97/99 PL98/99 PL99/99 PL97/99 PL98/99 PL12/2001 PL98/99 PL98/99 PL13/2001 PL10 0/99 PL99/99
Slide 12: The Search For KX36
The Search For KX36
Slide 13: Regional Aeromagnetics
Regional Aeromagnetics 5 km 5 km Government data Xcalibur high resolution data 13
Slide 14: KX36 New Kimberlite Discovery
KX36 New Kimberlite Discovery • Initial drilling and micro-diamond sampling campaign indicated: • Initial modelled (undiluted) diamond grade between 75-180 cpht (J Ferreira / MSA) • Indications of a reasonably coarse diamond size distribution from MiDA modelling (J Ferreira / MSA) • Surface area int
Slide 15: KX36 Magnetics
KX36 Magnetics Elephant Rig on KX36 Standpipe magnetics with drill rig in the background 15
Slide 16: Deflation Sampling Results: Garnets
Deflation Sampling Results: Garnets ± N 9 samples, 28 garnets Garnets 0 1 2 3-6 >6 0 50 100 200 Meters 16
Slide 17: Deflation Sampling Results: Chromites
Deflation Sampling Results: Chromites ± N 9 samples, 10 chromites Chromites 0 1 8 0 50 100 200 Meters 17
Slide 18: Garnets Cr-Ca Mineral Chemistry
KX36 Garnets Cr-Ca Mineral Chemistry 16 15 G10 G9 14 13 12 11 10 Cr-Ca Cr2O3 wt% 9 All garnets 8 7 6 5 4 3 2 1 ECLOGITIC 0 0 2 4 6 8 10 CaO wt% 18
Slide 19: Garnets Ti-Na Mineral Chemistry
KX36 Garnets Ti-Na Mineral Chemistry 1.2 1.0 0.8 TiO2 wt% MEGACRYSTS 0.6 0.4 GROUP 2 GROUP 1 ECLOGITES ECLOGITES 0.2 0.0 0.00 0.05 0.10 0.15 0.20 Na2O wt% 19
Slide 20: Chromites Cr-Ti Mineral Chemistry
KX36 Chromites Cr-Ti Mineral Chemistry 75 70 65 60 Cr2O3 wt% 55 Cr-Ti 50 All Chromites 45 40 35 30 25 0 2 4 6 8 10 TiO2 wt% 20
Slide 21: Ilmenites Ti-Mg Mineral Chemistry
KX36 Ilmenites Ti-Mg Mineral Chemistry 60 KX36 Drill Core 55 NK K KE02 50 Def. Sample TiO2 wt% 45 40 35 30 0 2 4 6 8 10 12 14 16 18 20 MgO wt% 21
Slide 22: CPX - PT Plot
KX36 CPX - PT Plot 25 35 Gph Dia P (kbar) 45 55 36 38 40 42 44 65 600 700 800 900 1000 1100 1200 1300 1400 Temp (ºC) 22
Slide 23: Petrographic Assessment (by Mike Skinner)
KX36 Petrographic Assessment (by Mike Skinner) • The rock is classified as a hypabyssal-facies, coherent, macrocrystic, altered phlogopite kimberlite • Based on the grain size of the groundmass, euhedral, opaque spinels (up to 0.07 mm) this kimberlite is petrographically rated as high interest with
Slide 24: KX36 MiDA
KX36 MiDA No. of Diamonds according to Sieve Size Fraction (mm) Hole Sample Weight +75 +106 +150 +212 +300 +425 +600 +850 +1180 +2360 No. of ID (Kg) Diamonds H4 80-125 19.98 0 0 4 2 2 1 0 0 0 0 9 H4 125-170 20.46 0 0 4 4 3 1 0 0 0 0 12 H4 170-215 20.14 0 1 2 0 0 2 0 0 0 0 5 H4 215-232 20.08 0 2 2 3
Slide 25: Completed Delineation Drilling
KX36 Completed Delineation Drilling Calcretized Kimberlite Weathered Kimberlite Fresh Kimberlite 516m Tonnage estimate of between 28Mt and 34Mt to base of Deposit (516m below surface) 25
Slide 26: Planned Delineation Drilling (shallow & geotechnical)
KX36 Planned Delineation Drilling (shallow & geotechnical) Extension of holes for Geotechnical assessment of wall rock Calcretized Kimberlite Weathered Kimberlite Fresh Kimberlite 516m Total: 1,680m Tonnage estimate of between 28Mt and 34Mt to base of Deposit (516m below surface) 26
Slide 27: Planned Delineation Drilling (intermediate & geotechnical)
KX36 Planned Delineation Drilling (intermediate & geotechnical) Calcretized Kimberlite Weathered Kimberlite Fresh Kimberlite 516m Total: 1,920m Tonnage estimate of between 28Mt and 34Mt to base of Deposit (516m below surface) 27
Slide 28: Planned Delineation Drilling (deep)
KX36 Planned Delineation Drilling (deep) Calcretized Kimberlite Weathered Kimberlite Fresh Kimberlite 516m Total: 2,400m Tonnage estimate of between 28Mt and 34Mt to base of Deposit (516m below surface) 28
Slide 29: Initial 24” LDD Sampling
KX36 Initial 24” LDD Sampling Calcretized Kimberlite Weathered Kimberlite Fresh Kimberlite Completed In Progress 516m Planned Total: 1,550m (+/- 740 tonnes) Tonnage estimate of between 28Mt and 34Mt to base of Deposit (516m below surface) 29
Slide 30: Proposed Infill 24” LDD Sampling
KX36 Proposed Infill 24” LDD Sampling Calcretized Kimberlite Weathered Kimberlite Fresh Kimberlite 516m Total: 1,240m (+/- 590 tonnes) Tonnage estimate of between 28Mt and 34Mt to base of Deposit (516m below surface) 30
Slide 31: Some “Classics”
Some “Classics ” • “No kimberlite has been intersected and it is considered highly unlikely that any kimberlites are located within this area” • “It is quite possible that the grains recovered in this license come from elsewhere having been transported by aeolian and fluvial forces” 31
Slide 32: How many more? We’ve only just begun!
How many more? ……we’ve only just begun! 15 km 32
Slide 33: Further enquiries: Petra Diamonds
Further enquiries: Petra Diamonds Cathy Malins [email protected] +44 20 7318 0452 www.petradiamonds.com