2015 broken hill resources investment symposium - geological survey of south australia - steve hill
TRANSCRIPT
New mineral provinces and mineral systems in South Australia's explora9on prospectus Steve Hill Director, Geological Survey of South Australia
May 2015
www.statedevelopment.sa.gov.au
This presenta,on… 3 main parts
1. Introduc,on (the challenges) 2. GSSA’s ac,vi,es (for mee,ng the challenges) 3. Curnamona examples (as an entrée for
Wednesday’s Technical Presenta,ons)
This presenta,on… • 3 main parts
1. Introduc9on (the challenges) 2. GSSA’s ac,vi,es (for mee,ng the challenges) 3. Curnamona examples (as an entrée for
Wednesday’s Technical Presenta,ons)
Discovery The strength of the mining industry is sustained through new discoveries. If you don’t have discoveries then you don’t have mines.
Geoffrey Blainey AC August 2013
Government / Private Drivers of Discovery (“The Carter slide” aka “The Magna Carter”)
Land Access
Human & Intellectual Capital Educa,on and training R&D – new explora,on and processing technologies
Precompe99ve Geoscien9fic Data and Informa9on
Capture and Delivery Value-‐add Research Underexplored / Covered Regions Targeted Programs
Discovery
Quality of Explora9on
Quan9ty of Explora9on
Geos
cienc
e Aus
tralia
; CSI
RO, U
of A
; SAC
OME;
GSS
A
Availability of Finance
GREENFIELDS
Adapted from Derek Carter
The Mineral Explora,on Expenditure ‘Wave’
0%
2%
4%
6%
8%
10%
12%
14%
16%
0
50
100
150
200
250
300
350
400
1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013
South Australian expenditure SA's percentage share of Australian expenditure SASP Target 41 - $200m to 2015 Former SASP Target T1.18 - $100m
Sou
th A
ustra
lian
min
eral
exp
lora
tion
expe
nditu
re ($
m)
SA
's s
hare
of
Aus
tralia
n m
iner
al
expl
orat
ion
expe
nditu
re (%
)
source: ABS data Cat. 8412.0 and Department of State Development
Challenger discovery
PACE
Four Mile discovery
Olympic Dam Expansion
Carrapateena discovery
Olympic Dam drill-out
PACE 2020
Prominent Hill
discovery
Jacinth-Ambrosia discovery
Hillside discovery
Impact of GFC
6
Catching waves…. • How do you catch waves? 1. You’ve got to be in the water
and ready before the wave comes (not watching from the shore)
Moon Plain, Stuart Shelf, SA (Photo S.Hill)
The DISCOVERY challenge… The covered minerals search space across 80% of South Australia!
Chile Peru
USA
51
Mt Cu-‐eq
A Discovery Gap to be filled
Source: MinEx Consul,ng March 2012
Poten9al for DISCOVERY
South Australia
Na9onal Mineral Explora9on Strategy & UNCOVER
Industry focused UNCOVER Roadmap drac now released via AMIRA
Improving Explora,on Performance • Methodical, systema,c and disciplined explora,on targe,ng, scale-‐reduc,on, decision-‐making process
• This scale reduc,on decision making process starts at terrane scale, through regional, camp and finally deposit scale
• Extends from predic,on to detec,on with scale reduc,on
This presenta,on… • 3 main parts
1. Introduc,on (the challenges) 2. GSSA’s ac9vi9es (for mee9ng the challenges) 3. Curnamona examples (as an entrée for
Wednesday’s Technical Presenta,ons)
GSSA ac,vi,es according to the scale reduc,on exercise: 1. Discovering new Mineral Provinces 2. Discovering new Mineral Systems 3. Discovering new Mineral Deposits
1. Discovering a new Mineral Province in South Australia
• South Australia’s far west…
Photo: Steve Hill
REGIONAL: New Cu-‐Ni-‐PGE Province in Western Gawler Craton / ‘Coompana’ (TMI backdrop)
‘Coompana’ Fowler Domain
Gawler Ranges
Deep crustal seismic line (GA, AusScope GSWA, GSSA)
SA’s largest airborne magne9cs /
radiometrics survey • 249,000 km survey data • Tender awarded to GPX
Surveys
Regional Magnetotellurics 50 km AusLAMP grid
Regional Plant Biogeochemistry Colin Dunn & Helen Waldron
Towards Regional drilling! • <6 basement penetra,ng holes
in western half of State! • Recent regional drilling under
Eucla Basin in WA reached basement within 400m
2. Discovering new Mineral Systems in South Australia
• Uno Province (southern GRV margins – northern Eyre Peninsula)
• 1590 Ma IOCG and associated crustal sec,on into other mineral systems?
• TRANSFORMATIONAL, WORLD-‐FIRST Mineral System Drilling collabora,on with DET CRC and Industry – New Technology pull through – Innova,ve mapping undercover approach – Real ,me data delivery – Industry explora,on collabora,on
New Eastern Gawler Craton Solid Geology
• 6144 drillholes (2558 of them targe,ng IOCGs) From: Tom Wise, GSSA 2015 SAREIC Presenta,on
WUDINNA KIMBA WHYALLA
PORT AUGUSTA Paris Menninnie
Dam
Iron Duke
Uno
PORT LINCOLN
Minotaur Explora9on
Kingston Resources
REGIONAL TO CAMP -Uno Province / Southern GRV margins
1590 Ma Gawler Range Volcanics cover
Regional Mineral System Drilling From $2 M PACE Fron,ers fund into > $7 M program!
Geological Mapping and Geochronology
AusLAMP Magnetotellurics grid (~50 km)
Regional Metallogenic
Studies
Regional Geochemistry and Mineralogy (esp. open file drill samples)
NE Olympic Domain Mineral Province Gravity (Dec 2013 release)
• ~$2M PACE funded • 34,541 new gravity
sta,ons at 1x1 km and 2x2 km spacing
• Included in Dept of Defence’s Woomera Prohibited Area (WPA)
Subsequent industry infill sta9ons and explora9on drilling
25
Prospectivity modelling by Tom Wise
Inputs from New Woomera Prohibited Area Gravity data
IOCG Mineral system target prospec9vity modelling
Eastern Gawler Craton (GSSA / DET CRC)
• Re-‐assayed 95 DHs
• HyLogger scanned 100s of DHs
• Collected 1000s petrophysical measurements
• Data integrated (regional 3D model release)
• Workflow for characterising altera9on (van der Wielen et al 2013; Fabris et al 2013).
Olympic Dam -‐ RU 39 5371
Hema,te and granite breccia Altered granite (Roxby Downs Granite)
Hema,te breccia
U3O8
Cu
Au
White mica: dominance of muscovite in ore zone and phengite in altera,on zone
Chlorite: dom
inance of
Fe-‐end
mem
ber in
proxim
al alte
ra,o
n zone
0m 100m 200m 300m
HyloggerTM data
Mineral System Map for enlarged target / vectoring
29
• Increase the size of the target • Predict where you are within the mineral system
• IOCG deposits - large alteration systems
Collabora9on is key! • PACE • Industry collabora,on • Best researchers and associated geoscience and technology
(e.g. Universi,es, CSIRO, DET CRC, Service Providers) • Na,onal partnerships (e.g. Australia Minerals, Geoscience Australia,
NSWGS, NT) • Interna,onal partnerships (e.g. Sernageomin (Chile), Saskatchewan GS,
China GS, China Na,onal Nuclear Corpora,on)
PACE Discovery Drilling
Round 8 of Drilling Collaborations • 27 successful projects • $2 million of collaboraBve drilling
grants • $4.9 million esBmated addiBonal
company expenditure • ~$6.9 million est. total program
value
7 Rounds of Drilling Collaborations • 438 drilling proposals • 217 receiving PACE support • 154 Complete
PACE Discovery Drilling
1 2 3 4 5 6 7 8 PACE 2.0 2.0 2.0 2.0 2.0 1.4 1.7 13.05 2.0
Actual 1.03 2.76 1.58 1.37 1.37 1.26 0.76 10.14 2.0 Industry 0.67 4.61 3.96 4.62 7.11 3.11 3.21 27.29 4.9 ($ in Million) 44+
7 Rounds of Drilling Collaborations • 438 drilling proposals • 217 receiving PACE support • 154 Complete
Discovery Drilling
1 2 3 4 5 6 7 8 PACE 2.0 2.0 2.0 2.0 2.0 1.4 1.7 13.05 2.0
Actual 1.03 2.76 1.58 1.37 1.37 1.26 0.76 10.14 2.0 Industry 0.67 4.61 3.96 4.62 7.11 3.11 3.21 27.29 4.9
($ in Million) $44 Mil
Geoscientst Assistance Program
GAP v 1.0 Strategic Partnership SACOME and DSD
• July 2009 – December 2012 • 50% GAP / 50% Company funded contracts • 33 placements with high retenBon rate and
progression into more senior roles • AddiBonal funding for training • 22 companies • ~$200,000 annual expenditure
Visit the SACOME website for
more information
Geoscientst Assistance Program
GAP v 2.0 3 to 6 month contracts
• Maintain, develop and diversify the States geoscienBst skill base
• Minimise the loss of graduates and skilled professionals to other States and Sectors
Opportunities for • Field and Drilling programs • Geophysical placements
Ask for Jonathon Forbes!
This presenta,on… • 3 main parts
1. Introduc,on (the challenges) 2. GSSA’s ac,vi,es (for mee,ng the challenges) 3. Curnamona examples (as an entrée for
Wednesday’s Technical Presenta9ons)
South Australian Uranium Occurrences Map – Revised seventh edi,on. 2015 1:2 000 000 Wilson, T.C, Fairclough, M.C., McAvaney, S.O. and Kluske, J. (compilers)
Wilson, T. 2015. Uranium and uranium mineral systems in South Australia – Third edi,on, Report Book 2015/00011. Department of State Development, South Australia, Adelaide.
Palaeodrainage and Cenozoic Coastal Barriers of South Australia 2nd Edi,on 2012 1:2 000 000
Hou, B., Fabris, A.J., Michaelsen, B.H., Katona, L.F., Keeling, J.L., Stoian, L., Wilson, T.C., Fairclough, M.C., Cowley, W.M. and Zang, W. (compilers).
Youngest ICPMS dated zircons of the sampled suite are Permian.
Excava,on of the ‘Sprigg Costean’ exposing the Sprigg Diamic,te Member in 1987 over-‐looked by John Drexel and Reg Sprigg.
Introduc,on of the Sprigg Diamic,te Member during a MTEC geological educa,on course 2009.
The Sprigg Diamic,te exposed in ‘Sprigg Costean’. (2003)
Stephen B Hore, Anthony J Reid and Steven M Hill 2015 Geochronology provides new insights into one of South Australia’s most enigma9c rocks: Defini9on and age of the Sprigg Diamic9te Member, northern Flinders Ranges, South Australia, MESA Journal 77
New geochronology for enigma,c rock in key field sewng!
AusLAMP SA 50km grid – current status (Stephan Thiel, GSSA)
43 Department of State Development
Australian Lithospheric Architecture Magnetotelluric Project Status as at 09 April 2014 • Blue - sites completed • Aqua – completed pending
data QC • Green – sites currently
deployed • Yellow – sites planned
AusLAMP extension – University of Adelaide
Disclaimer The informa9on contained in this presenta9on has been compiled by the Department of State Development and originates from a variety of sources. Although all reasonable care has been taken in the prepara9on and compila9on of the informa9on, it has been provided in good faith for general informa9on only and does not purport to be professional advice. No warranty, express or implied, is given as to the completeness, correctness, accuracy, reliability or currency of the materials. The Department of State Development and the Crown in the right of the State of South Australia does not accept responsibility for and will not be held liable to any recipient of the informa9on for any loss or damage however caused (including negligence) which may be directly or indirectly suffered as a consequence of use of these materials. The Department of State Development reserves the right to update, amend or supplement the informa9on from 9me to 9me at its discre9on.
www.statedevelopment.sa.gov.au