o o 114o 120o 126 132o 138o 144o 150 50 51 52 53 54 55 8o 8o TORRES STRAIT

TIMOR SEA SC SC Maningrida Nhulunbuy Millingimbi DARWIN

Weipa c Joseph CORAL o SEA 12 12o Australian Lead and Zinc Density, Bonaparte Daly River Pine Creek Numbulwar Gulf of Deposits, Occurrences, and Potential Gulf Katherine Ngukurr

SCALE 1:5 000 000 Carpentaria

0 100 200 300 400 500 Kilometers Wyndham Kowanyama SD LAMBERT CONFORMAL CONIC PROJECTION Kununurra SD Central Meridian: 134oE Standard Parallels: 18oS, 36oS Cooktown Geocentric Datum of 2000m McArthur River

Mossman 1000m

Cairns Elliott Karumba 16o Atherton Derby Normanton 16o

Broome Halls Creek Tully Fitzroy Crossing Pillara Georgetown NORTHERN TERRITORY Century 2000m Cadjebut 200m Balcooma Ingham 1000m G 1000m Admiral Bay Lady Loretta Townsville re SE 200m a Camooweal t SE 200m

Dugald river

Hilton Mount Isa Bowen B Mt Isa Julia Cloncurry Creek a rr Shay Gap Hughenden ie Port Hedland r

20o

o 20 Cannington Mackay R Yuendumu e e Winton f

Boulia Onslow Papunya Exmouth Alice Springs Longreach Barcaldine SF SF

AUSTRALIA Docker River Blackall WESTERN Gladstone Yulara Abra Tambo Windorah 24o o Birdsville 24 Bundaberg Carnarvon Warburton Taroom

Charleville Quilpie Magellan Mitchell

Oodnadatta Kingaroy Chinchilla Maroochydore SG SG Lake Eyre Cunnamulla Teutonic Bore Coober Pedy Jaguar Dirranbandi Goondiwindi Warwick Grove Freddie Well SOUTH AUSTRALIA Golden Marree 28o

o Geraldton Ballina 28 Moree Dongarra Leigh Creek South Bourke Brewarrina Cook Beltana Walgett Deakin Narrabri Grafton Kalgoorlie-Boulder Rawlinna Dalwallinu Woomera Jurien Coolgardie Endeavour Coffs Habour (Elura) Coonamble INDIAN Moora Kambalda Wilcannia Cross Eucla Southern Broken Cobar Coonabarabran Madura Ceduna Hill Tamworth SH Broken Hill NEW Kempsey Goomalling SOUTH SH Quorn Gilgandra Kambalda Menninnie Dam Port Augusta Northam Menindee Norseman Balladonia Port Macquarie OCEAN York WALES PERTH Whyalla Peterborough Corrigin Kimba Scone Port Pirie Ivanhoe Forster-Tuncurry Pingelly 200m Kambalda Bight Cleve Maitland Great Australian Clare o Lake Grace 1000m 32 Newcastle o Wagin Ravensthorpe 2000m Esperance Renmark 32 Bunbury Mildura West Wyalong Katanning Port Lincoln Busselton Hay ADELAIDE Balranald SYDNEY Margaret River Manjimup Ouyen Wollongong Mount Barker Swan Hill Wagga Wagga Woodlawn Albany Kingscote Deniliquin VICTORIA Tumut CANBERRA Captains Flat SI Bordertown ACT Ulladulla SI Nhill Echuca Batemans Bay TASMAN Horsham Benalla Cooma Naracoorte Narooma

Bega Currawong Millicent Wilga Eden SEA Hamilton 36 o Mount Gambier o 36 Portland Geelong Warrnambool LEAD AND ZINC OCCURRENCE DENSITY MELBOURNE Lead and zinc occurrences DEPOSIT TYPES Low Geological regions boundary, broken where subdivided Low sulphidation epithermal Wonthaggi Medium Rock units with lead zinc potential Medium - High Major population centres Mississippi valley type High Sediment hosted lead zinc GEOLOGICAL REGIONS BY Discussion of Density Grid Technique: PREDOMINANT GEOLOGICAL AGE Sediment hosted zinc lead SJ The Grid.MakeDensitySurface request in ESRI's ArcView calculates the density of point features BASS STRAIT around each output Grid cell. (This study used a one kilometre cell size and one hundred kilometre Cainozoic SJ search radius). Density is calculated as the value of points per unit of area. The default unit of area Mesozoic to Cainozoic Sediment hosted zinc lead copper is one square map unit Mesozoic Skarn Compiled by: M. Ratajkoski, M.B. Huleatt, A.L. Jaques, S. Jaireth, and R.R. Towner Conceptually, with the Simple option a circle is drawn around each Grid cell centre using a radius, Palaeozoic to Cainozoic and the number of points that fall within the circle is totalled and divided by the circle's area Cartography by G.A. Young Palaeozoic to Mesozoic Volcanic associated massive sulphide With the Kernel option, a smoothly curved surface is fitted over each point. Its value is highest when Palaeozoic Wynyard Information sources: This map has been compiled using Geoscience Australia's national datasets, including you are right on the point. This diminishes as you move away from the point, reaching zero at the radius Geology, GeoRegions and Mineral Deposits. Mineral Deposits and Occurrences have been retrieved from Unassigned distance from the point defined in the densitySpec. The density at each output Grid cell is calculated Proterozoic to Mesozoic Geoscience Australia's national databases, derived from the 1:1 000 000 Digital Chart of the World (DCW) and by adding the values of all the kernel surfaces where they overlay the Grid cell centre. The use of the Proterozoic to Palaeozoic AUSLIG 1:10 000 000 topography kernel function in density estimation is described by Silverman (1986) Hellyer o Proterozoic Named locations indicate significant deposits Rosebery This work is copyright. Apart from any fair dealings for the purposes of study, research, criticism or review, as permitted 40 under the Copyright Act, no part may be reproduced by any process without permission. Inquiries should o References: Silverman, B.W., Density Estimation for Statistics and Data Analysis, New York, Chapman Archaean to Proterozoic be directed to the Communication Unit, Geoscience Australia, GPO Box 378, Canberra City, ACT, 2601, Australia and Hall, 1986 40 Archaean Geoscience Australia has tried to make the information in this product as accurate as possible. However, it does not guarantee that the information is totally accurate or complete. THEREFORE, YOU SHOULD NOT RELY TASMANIA SOLELY ON THIS INFORMATION WHEN MAKING A COMMERCIAL DECISION Published by Geoscience Australia, Department of Industry, Tourism and Resources, Canberra, Australia. Issued under the authority of the Minister for Industry, Tourism and Resources

HOBART Copies of this map may be downloaded from the Geoscience Australia website at: http://www.ga.gov.au/map/images.jsp#minerals It is recommended that this map be referred to as: Ratajkoski, M, Jaireth, S., et al, 2006, Australian Lead and Zinc Density, Deposits, Occurrences, and Potential, Geoscience Australia, Canberra, Australia SK SK Commonwealth of Australia, 2006 Produced by Geoscience Australia.

JULY 2006 EDITION

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