gold opportunities in new south wales€¦ · project name deposit type current resources and...

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Au OCTOBER 2019 Gold Opportunities in New South Wales, Australia To Adelaide Peak Gold Mines Peak Gold Mines Woodlawn Woodlawn Dargues Reef Copper Hill Commonwealth Hillgrove Tomingley Tomingley Discovery Ridge Cowal Cowal Drake/Mt Carrington Cangai Mt Adrah McPhillamys Lewis Ponds Hera Hera Cadia Cadia Gidginbung Marsden Temora Sorpresa Peak Hill Mineral Hill Tritton Northparkes Northparkes New England Orogen Lachlan Orogen Thomson Orogen Murray Basin Delamerian Orogen Curnamona Province Stawell Zone Bendigo Zone DUBBO Wentworth Cobar WOLLONGONG Nyngan Walgett Coonamble Broken Hill Narrabri Inverell Goulburn Griffith NOWRA Batemans Bay Narooma Bega Cooma Moree WAGGA WAGGA ALBURY Grafton Yamba Ballina LISMORE NEWCASTLE Balranald Deniliquin Tibooburra Lightning Ridge Eden BATHURST PORT MACQUARIE COFFS HARBOUR Kempsey Taree Muswellbrook Bourke TAMWORTH SYDNEY CANBERRA A.C.T. QUEENSLAND VICTORIA SOUTH AUSTRALIA REFERENCE Au occurrence 0.5 to 10 t Au* 10 to 50 t Au* >50 t Au* Operating mine Project Export port Railway Major road, sealed Major road, unsealed Gas pipeline Temora Cadia Cadia * Total contained commodity 200 km N Overview • New South Wales (NSW) has a gold endowment (past production and identified resources) exceeding 3280 tonnes (t) / 106 million ounces (Moz). • Gold production is sourced from a variety of mineral deposit types. • The state remains under-explored, with a range of opportunities for new discoveries. Deposit types New South Wales is host to a diverse range of gold deposit types, with gold being produced as either the principal commodity (e.g. Cadia, Cowal) or as a by-product (e.g. Northparkes). These gold-rich systems include: • Porphyry Cu–Au (Cadia, Northparkes, Copper Hill, Temora district) and granite-related gold (GRG) (Mt Adrah and Dargues Reef) deposits • ‘Cobar-type’ (distal intrusion-related Cu–Au) deposits (Peak Gold Mines and CSA) which also may have associated skarn mineralisation (e.g. Hera) • Orogenic Au (McPhillamys, Hillgrove, Tomingley) • High, intermediate and low sulfidation epithermal Au systems (Gidginbung, Mineral Hill, Drake) • Gold-rich volcanic associated massive sulfide (VAMS) deposits such as Woodlawn and Lewis Ponds • Significant gold in some Broken Hill-type (BHT) base metal systems within the Curnamona Craton. Gold has also been mined from a diverse range of modern and ancient placer, eluvial and beach deposits and a host of other deposit types where it occurs as a minor commodity. resourcesandgeoscience.nsw.gov.au

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Page 1: Gold opportunities in New South Wales€¦ · Project name Deposit type Current resources and reserves (JORC) Contained gold (kg) Contained gold (Koz) Mineral Hill Epithermal Pearse

AuO C TO B E R 2 0 1 9

GoldOpportunities in New South Wales, Australia

To Adelaide

Peak Gold MinesPeak Gold Mines

WoodlawnWoodlawn

DarguesReef

Copper Hill

Commonwealth

Hillgrove

Tomingley Tomingley

DiscoveryRidge

CowalCowal

Drake/Mt Carrington

Cangai

Mt Adrah

McPhillamys

Lewis Ponds

HeraHera

CadiaCadia

Gidginbung

Marsden

Temora

SorpresaPeak HillMineral Hill

Tritton

NorthparkesNorthparkes

New England Orogen

Lachlan Orogen

Thomson Orogen

Murray Basin

Delamerian OrogenCurnamonaProvince

StawellZone

BendigoZone

DUBBO

Wentworth

Cobar

WOLLONGONG

Nyngan

Walgett

Coonamble

Broken Hill

Narrabri

Inverell

Goulburn

Griffith

NOWRA

Batemans Bay

Narooma

Bega

Cooma

Moree

WAGGAWAGGA

ALBURY

GraftonYamba

Ballina

LISMORE

NEWCASTLE

Balranald

Deniliquin

Tibooburra Lightning Ridge

Eden

BATHURST

PORT MACQUARIE

COFFS HARBOUR

Kempsey

Taree

Muswellbrook

Bourke

TAMWORTH

SYDNEY

CANBERRA

A.C.T.

Q U E E N S L A N D

V I C T O R I A

SO

UT

H A

US

TR

AL

I A

REFERENCE

Au occurrence0.5 to 10 t Au*10 to 50 t Au*>50 t Au*Operating mineProjectExport portRailway Major road, sealedMajor road, unsealedGas pipeline

Temora

CadiaCadia

* Total contained commodity

200 km

N

Overview

• New South Wales (NSW) has a gold endowment (past production and identified resources) exceeding 3280 tonnes (t) / 106 million ounces (Moz).

• Gold production is sourced from a variety of mineral deposit types.

• The state remains under-explored, with a range of opportunities for new discoveries.

Deposit types

New South Wales is host to a diverse range of gold deposit types, with gold being produced as either the principal commodity (e.g. Cadia, Cowal) or as a by-product (e.g. Northparkes).

These gold-rich systems include:• Porphyry Cu–Au (Cadia, Northparkes, Copper Hill, Temora

district) and granite-related gold (GRG) (Mt Adrah and Dargues Reef) deposits

• ‘Cobar-type’ (distal intrusion-related Cu–Au) deposits (Peak Gold Mines and CSA) which also may have associated skarn mineralisation (e.g. Hera)

• Orogenic Au (McPhillamys, Hillgrove, Tomingley)• High, intermediate and low sulfidation epithermal Au

systems (Gidginbung, Mineral Hill, Drake)• Gold-rich volcanic associated massive sulfide (VAMS)

deposits such as Woodlawn and Lewis Ponds• Significant gold in some Broken Hill-type (BHT) base metal

systems within the Curnamona Craton.

Gold has also been mined from a diverse range of modern and ancient placer, eluvial and beach deposits and a host of other deposit types where it occurs as a minor commodity.

resourcesandgeoscience.nsw.gov.au

Page 2: Gold opportunities in New South Wales€¦ · Project name Deposit type Current resources and reserves (JORC) Contained gold (kg) Contained gold (Koz) Mineral Hill Epithermal Pearse

Prospective terranes

Lachlan OrogenThe mainly Ordovician to Carboniferous Lachlan Orogen is generally poorly explored for gold. Recent discoveries (McPhillamys – maiden ore reserve announced September 2017, Tomingley and Hera) highlight the prospectivity of these provinces. Important prospective areas include:• The Macquarie Arc — several belts of volcanic-dominated

rocks of Ordovician to Early Silurian which host approximately 59 Moz of gold including the world class Cadia deposits

• Silurian to Early Devonian rift basins (Hill End Trough, Goulburn Basin, Cobar Basin)

• The Gilmore Fault Zone (a major crustal structure)• The Early Devonian Braidwood Granodiorite.

New England OrogenThe Devonian to Triassic New England Orogen is under-explored by Australian standards. The orogen is host to the Hillgrove orogenic Au–Sb deposit, the Drake epithermal system and the Timbarra and Uralla GRG goldfields.

Other areasThe Stawell and Bendigo zones, which host major gold vein systems in Victoria, are interpreted to extend into southwestern NSW. Similarly, the poorly exposed and poorly understood Thomson Orogen, which extends southwards from Queensland into northwestern NSW, has been little explored.

Other areas where little exploration has been done include the Neoproterozoic to early Palaeozoic Koonenberry Belt, which is now interpreted to be a Cambrian arc built on the rifted margin of Gondwana and the northern extension of the Lachlan Orogen, where it is covered by younger sequences.

Gold endowment (past production + resources) for NSW, classified by deposit typeTotal endowment >3280 t / 106 Moz Current resources >2120 t / 68 Moz

Epithermal

Skarn

VAMS

Orogenic Au

BHT

Porphyry

Granite-related

Alluvial/eluvial

Distal intrusion-related Cu–Au

Orogenic base metal

4.9%

1.4%

14.7%

0.6%

0.3%

2.4%

54.4%

10.8%

1.6%

8.9%

Gold production in New South Wales (1998–2019)

1998

1999

2000

2001

2002

2003

2004

2005

2006

2007

2008

2009

2010

2011

2012

2013

2014

2015

2016

2018

2019

2017

Tonn

es

Financial year (ending 30 June)

10

0

20

30

40

50

Page 3: Gold opportunities in New South Wales€¦ · Project name Deposit type Current resources and reserves (JORC) Contained gold (kg) Contained gold (Koz) Mineral Hill Epithermal Pearse

Summary of significant gold resources within NSWMine nameDeposit type Current resources and reserves (JORC)

Contained gold (kg)

Contained gold (Koz)

Cadia Valley OperationsPorphyry Cu–Au

Cadia East: (total resource) 2900 Mt @ 0.36 g/t Au, 0.26% CuCadia East: (probable) 1400 Mt @ 0.47 g/t Au, 0.30% Cu

1 057 518 34 000

CowalEpithermal

(total resource) 240.6 Mt @ 0.96 g/t Au(proved & probable) 141.3 Mt @ 0.85 g/t Au

23 0632 7415

HeraSkarn

(total resource) 2.061 Mt @ 1.8 g/t Au, 2.8% Pb, 4.2% Zn, 34 g/t Ag(probable) 1.577 Mt @ 1.9 g/t Au, 3.0% Pb, 4.5% Zn, 34 g/t Ag

3092 99

NorthparkesPorphyry Cu–Au

(total resource) 471.81 @ 0.19 g/t Au, 0.56% Cu(proved & probable) 125.74 Mt @ 0.20 g/t Au, 0.57 % Cu

94 362 3034

Peak Gold MinesDistal intrusion-related Cu–Au

(total resource) 14.210 Mt @ 1.5 g/t Au, 1.4% Cu, 0.9% Pb, 1.1% Zn, 9 g/t Ag(proved & probable) 2.834 Mt @ 2.0 g/t Au, 1.1% Cu, 1.8% Pb, 1.9% Zn, 15 g/t Ag

21 315 685

TomingleyOrogenic Au

Tomingley open pit: (total resource) 5.075 Mt @ 1.5 g/t AuTomingley open pit: (proved & probable) 0.677 Mt @ 0.7 g/t AuTomingley underground: (total resource) 1.364 Mt @ 3.8 g/t AuTomingley underground: (proved & probable) 0.732 Mt @ 3.1 g/t Au

12 658 407

WoodlawnVAMS

Underground: (measured & indicated) 4.5 Mt @ 6.5 % Zn, 2.0% Cu, 2.4% Pb, 0.5 g/t Au, 51 g/t Ag

Underground: (inferred) 2.9 Mt @ 5.2% Zn, 1.8% Cu, 2.0% Pb, 0.5 g/t Au, 40 g/t AgUnderground: (proved & probable) 3.1 Mt @ 5.2 % Zn, 1.6%Cu, 1.8 % Pb, 0.4 g/t Au,

38 g/t AgReclaimed tailings: (measured & indicated) 9.8 Mt @ 2.2% Zn, 0.5% Cu, 1.3% Pb,

0.3 g/t Au, 32, g/t AgReclaimed tailings: (inferred) 1.1 Mt @ 2.3% Zn, 0.5% Cu, 1.2% Pb, 0.3 g/t Au,

27 g/t AgReclaimed tailings: (proved & probable) 9.3 Mt @ 2.2% Zn, 0.5% Cu, 1.3% Pb,

0.3 g/t Au, 31 g/t Ag

6970 224

Project nameDeposit type

Cadia Valley OperationsPorphyry Cu–Au

Ridgeway: (total resource) 150 Mt @ 0.52 g/t Au, 0.33% CuRidgeway: (probable) 80 Mt @ 0.54 g/t Au, 0.28% Cu (care and maintenance)Other: (total resource) 120 Mt @ 0.37 g/t Au, 0.20% CuOther: (proved & probable) 86 Mt @ 0.53 g/t Au, 0.15% Cu

207 948 3900

CangaiGranite-related Au

(inferred): 3.2 Mt @ 3.35% Cu, 0.8 g/t Au, 20.17 g/t Ag, 0.37% Zn, 0.005% Co 2560 82

CommonwealthVAMS

(inferred) 0.912 Mt @ 2.4 g/t Au, 44 g/t Ag, 1.2% Zn, 0.5% Pb, 0.08% Cu 2189 70

Copper HillPorphyry Cu–Au

(indicated & inferred) 87 Mt @ 0.36% Cu, 0.32 g/t Au 27 840 895

Dargues ReefGranite-related

(total resource) 1.59 Mt @ 6.8 g/t Au 10 182 348

Discovery RidgeOrogenic Au

(total resource) 10.4 Mt @ 1.17 g/t Au(proved & probable) 1.17 Mt @ 5.73.8 g/t Au

12 168 391

Drake/Mt CarringtonEpithermal

Mt Carrington Strauss & Kylo: (indicated & inferred) 4.5 Mt @ 1.5 g/t Au, 1.6 g/t Ag (gold-rich zones)

Mt Carrington Red Rock & Guy Bell: (indicated & inferred) 1.79 Mt @ 1.2 g/t Au, 3.6 g/t Ag (gold-rich zones)

Mt Carrington Lady Hampden, White Rock: (indicated) 3.54 Mt @ 0.3 g/t Au, 73 g/t Ag (silver-rich zones)

Mt Carrington Lady Hampden, White Rock, White Rock North & Silver King: (inferred) 8.95 Mt @ 0.1 g/t Au, 51 g/t Ag (silver-rich zones)

10 855 349

GidginbungEpithermal

Gidginbung: (inferred) 8 Mt @ 1.5 g/t Au, 0.09% Cu 12 000 386

HillgroveOrogenic Au

(total resource) 2.8 Mt @ 5.1 g/t Au, 1.7% Sb(proved & probable) 2.195 Mt @ 3.8 g/t Au, 2.1% Sb

14 280 459

Lewis PondsVAMS

(indicated & inferred) 20.24 Mt @ 0.5 g/t Au, 33 g/t Ag, 1.5% Zn, 0.7% Pb, 0.1% Cu 10 120 325

MarsdenPorphyry Cu–Au

(indicated & inferred) 122.97 Mt @ 0.27 g/t Au, 0.46% Cu(probable) 65.17 Mt @ 0.39 g/t Au, 0.57% Cu

33 202 1067

McPhillamysOrogenic Au

(indicated & inferred) 69.8 Mt @ 1.02 g/t Au(probable) 60.8 Mt @ 1.04 g/t Au

71 196 2289

Table continued on back.

MI

NE

SP

RO

JE

CT

S

resourcesandgeoscience.nsw.gov.au

Page 4: Gold opportunities in New South Wales€¦ · Project name Deposit type Current resources and reserves (JORC) Contained gold (kg) Contained gold (Koz) Mineral Hill Epithermal Pearse

Project nameDeposit type Current resources and reserves (JORC)

Contained gold (kg)

Contained gold (Koz)

Mineral HillEpithermal

Pearse (oxide & sulfide): (measured & indicated) 0.298 Mt @ 6.9 g/t Au, 80 g/t AgPearse (oxide & sulfide): (proved & probable) 0.235 Mt @ 6.9 g/t Au, 71.7 g/t AgPearse North: (total resource) 0.298 Mt @ 2.7 g/t Au, 26 g/t AgPearse North: (proved & probable) 0.179 Mt @ 2.5 g/t Au, 21 g/t AgSouthern Ore Zone: (total resource) 1.985 Mt @ 1.2% Cu, 1.4% Pb, 1.1% Zn, 1.8 g/t Au,

19 g/t AgRed Terror: (total resource) 0.186 Mt @ 1.7% Cu, 0.1% Pb, 0.3% Zn, 2.2 g/t Ag, 2.4 g/t Au

6761 216

Mt AdrahGranite-related Au

(indicated & inferred) 20.5 Mt @ 1.1 g/t Au 22 550 770

Peak HillEpithermal

Proprietary underground: (inferred) 1.02 Mt @ 3.29 g/t Au, 0.15 % Cu 3356 108

SorpresaEpithermal

(indicated & inferred) 6.4 Mt @ 0.61 g/t Au, 38 g/t Ag 3940 127

Temora ProjectPorphyry Cu–Au

Dam: (indicated & inferred) 40 Mt @ 0.30% Cu, 0.41 g/t AuCullingerai: (inferred) 24 Mt @ 0.30 % Cu, 0.31 g/t AuEstori: (inferred) 14 Mt @ 0.21 % Cu, 0.35 g/t AuMandamah: (inferred) 26 Mt @ 0.34 % Cu, 0.38 g/t AuYiddah: (inferred) 127 Mt @ 0.32 % Cu, 0.14 g/t Au

68 669 2208

Note: Project totals for contained gold are based on combined resources.

Top: Wetlands near Cowal gold mine.

Bottom left: Free gold in drillcore from Cadia East.

Bottom right: Copper gold ore with quartz veins, chalcopyrite and bornite from underground at Ridgeway mine near Cadia.

PR

OJ

EC

TS

Contact: [email protected] | +61 2 4063 6500Disclaimer: The information contained in this publication is based on knowledge and understanding at time of writing (October 2019), using publicly available information. Because of advances in knowledge, users are reminded of the need to ensure that information upon which they rely is up to date. The information contained in this publication may not be or may no longer be aligned with government policy nor does the publication indicate or imply government policy. No warranty about the accuracy, currency or completeness of any information contained in this document is inferred (including, without limitation, any information in the document provided by third parties). While all reasonable care has been taken in the compilation, to the extent permitted by law, the State of New South Wales (including the NSW Department of Planning, Industry and Environment) exclude all liability for the accuracy or completeness of the information, or for any injury, loss, or damage whatsoever (including without limitation liability for negligence and consequential losses) suffered by any person acting, or purporting to act, in reliance upon anything contained herein. Users should rely upon their own advice, skills, interpretation and experience in applying information contained in this publication. The product trade names in this publication are supplied on the understanding that no preference between equivalent products is intended and that the inclusion of a product name does not imply endorsement by the Department over any equivalent product.