Geologic Evolution and Gold Metallogeny of China

Prof. Richard Goldfarb
China University of Geoscience and CSM
30th September, 2020
– Temporal and spatial distribution of gold deposits in China
– Tectonic history and orogenic sutures of Chinese cratonal provinces as controls on Au mineralization

Mineral exploration techniques in weathered and covered terrains

Dr. Walid Salama
CSIRO
30th September, 2020
– Challenges of regolith cover in ancient and weathered terrains
– Chemical dispersion and footprints created by groundwater flow

Unravelling the Geology of Olympic Dam

Jesse Clark and Dr. Kathy Ehrig
BHP
23rd September, 2020
– Discovery and geology of Olympic Dam
–3D Structural interpretation and deposit model implications

Environment, Social and Governance for Geologists

Monica Ospina and Rob Karpati
O Trade
23rd September, 2020
– Social license and community involvement for mining operations
– Importance of stakeholder engagement to minimize financial risk – Corporate and government accountability

Emplacement, crystallisation and PGE ore formation of the Bushveld Complex, South Africa: new geochronological, microtextural and PGE data Prof. Wolfgang Maier
Cardiff University
16th September, 2020
– Introduction to Bushveld magmatism, tectonics, and geochronology
– Chemical observations on igneous processes responsible for concentration and distribution of PGE rich sulfide ores

Rare Earth Elements – Mineralogy, markets, and other considerations for economic development

Darren L. Smith
Dahrouge Geological Consulting
16th September, 2020
– Applications and market for REE metals, current and future
– Assessment of major REE deposits in a future economic framework

Zn-Rich VMS deposits: Genesis, temporal distribution and controlling factors Prof. Stephen Piercey
Memorial University of Newfoundland
9th September, 2020
– Review of empirical data linking Zn mineralization to felsic magmatism and crustal sediments
– Distribution of Zn-rich VMS deposits globally and temporally

Ingredients for high-grade IOCG mineralization – insights from the Gawler craton, Australia

Dr. Tobias Schlegel
CSIRO
9th September, 2020
– Replacement textures and structural control of Olympic Dam IOCG mineralization
– Fluorite composition as a proxy for fluid evolution during mineralization

Composition of base metal sulfides from magmatic Ni Cu PGE deposits Eduardo Teixeira Mansur
Université du Québec à Chicoutimi
2nd September, 2020
– Trace element mapping in sulfides
– Evidence for multiple stages of sulfide mobility in magmatic deposits

Magnetite geochemistry reveals fluid sources in IOCG deposits María Alejandra R. Mustafa
University of Michigan
2nd September, 2020
– Magnetite trace element compositional differences at Candalaria deposit
– Isotopic evidence for magmatic-hydrothermal sources

Aseismic Refinement of Orogenic Gold Systems Dr. Chris Voisey
PGN Geosciences
2nd September, 2020
– Gold transport in orogenic systems
– Implications for aseismic redistribution of gold during quiescent tectonic intervals

Using hydrothermal titanite geochronology to discriminate between porphyry and non-porphyry related propylitic alteration in the Oyu Tolgoi porphyry district of Southern Mongolia Dr. Lisa Hart-Madigan
Museum of Natural History, London
2nd September, 2020
– Porphyry alteration footprints
– Hydrothermal titanite formation in propylitic alteration assemblage

Magmatic-hydrothermal textures in Tasmanian Sn systems Speaker
Prof. David Cooke
CODES, University of Tasmania
26th August, 2020
– Volatile exsolution textures in granitic tin systems
– Links between miarolitic cavities, pegmatites, and unidirectional solidification textures (USTs)

Using Principal Component Analysis as a Gold Exploration Tool
Ryan Kressall
Mercator Geological Services
26th August, 2020
– Preparation, treatment, and use of large multi-element geochem. datasets (e.g. soil, assay).
– Application of principle component analysis (PCA) to gold exploration.

Tracing hydrothermal ore-forming processes – Recent developments in the use of sulfide trace element signatures, and some thoughts for future research.
Dr. Max Frenzel
Helmholtz-Zentrum Dresden-Rossendorf (HZDR)
19th August, 2020
– Sulfide trace element records of hydrothermal fluid properties
– Statistical consideration of hierarchical data structures for deposits.

The evolution of the Cu-Au systems of the Carajás Province, Brazil
Prof. Gustavo Melo
Universidade Federal de Ouro Prieto
19th August, 2020
– Geochronology of magmatism and mineralization in the Carajás province.
– Archean & Paleoproterozoic IOCG & magmatic–hydrothermal Cu–Au.

Metal-rich sulfides did not simply walk into Mordor… the fluxing of Ni-Cu-PGE-Te-Au in alkaline systems
David Holwell
University of Leicester
12th August, 2020
– A continuum between lower crustal Ni–Cu–PGE magmatic sulfides, porphyry and epithermal deposits (?)
– Primary carbonate and the involvement of CO2 in alkaline–magmatic sulfide deposits

Relationships between geodynamics and seafloor mineralization in modern back-arc basins
Melissa Anderson
University of Toronto
12th August, 2020
– Structural and magmatic setting of large seafloor massive sulfide acculmulations in W. Pacific back-arc basins
– Bathymetry-based mapping techniques for back-arc seafloor

Carbonatite related REE deposits in China: Spatio-temporal distribution and ore deposit model
Prof. Yuling Xie
University of Science and Technology Beijing
5th August, 2020
– Giant carbonatite–related REE deposits of China
– Importance of sulfate for REE transport and precipitation

Skarns: Zoning Patterns and Controlling Factors
Prof. Zhaoshan Chang
Colorado School of Mines
5th August, 2020
– Identifying alteration and mineralization zonation in skarns
– Using skarn zonation for exploration vectoring

Gosowong Low Sulfidation Epithermal Goldfield, Indonesia: Geology, Mineral Deposits and Exploration Prospectivity
Dr. Bruce Gemmell
Gemmell Geoscience & CODES, University of Tasmania
29th July, 2020
– Overview of Indonesia magmatic-hydrothermal ore deposits
– Exploration workflow & prospectivity analysis used to discover Gosowong & Kencana epithermal Au deposits

Passive Seismic Methods for Mineral Exploration
Prof. Nick Arndt
SISPROBE & Université Grenoble Alpes
29th July, 2020
– Introduction to cost-effective modelling of sub-surface geology & mineralization with passive seismic tomography.
– Applications to sulfide & Fe ore deposit exploration

The place of remote sensing in the exploration geoscientist’s toolkit
Dr. Robert Hewson
Remote Sensing Consultant
22nd July, 2020
– Case studies for multi- & hyperspectral remote sensing and geophysics integration for porphyry, VMS, Mn deposits etc.
– Inventory of archival, existing and upcoming satellite hyperspectral sensors

Angolan diamonds – into the XXI century?
Dr. Luís Chambel & José Abranches
Sínese & University of Lisbaon 22nd July, 2020
– Geological, political, economic history, overview and future of diamond production in Angola
– Short section in both Portuguese & English

How to determine the timing of mineralisation from deposit-scale grade patterns obtained from drilling—an interactive presentation
Jun Cowan (ft. Bruce Hobbs)
JunCowan & Monash University
15th July, 2020
– Distinguishing between syngenetic & epigenetic mineralization using drill assay data and structural modelling
– At the deposit scale, some world-class ‘VMS’ deposits exhibit epigenetic characteristics

How the biggest and best diamonds defy exploration
Evan Smith
Gemological Institute of America 15th July, 2020
– Excellent introduction and overview of diamond genesis
– Explanation of the genetic differences between different diamond types, in particular, the largest, clearest, most valuable diamonds, and how we can (and cannot) explore for them.

Critical minerals geosciences, renewables and sustainability 
Bénédicte Cenki-Tok
Montpellier University & Sydney University
8nd July, 2020
– Critical minerals: definition, supply & demand into the next few decades
– Enrichment mechanisms for various critical elements, e.g., indium in sphalerite

Critical metals in bauxite & red mud. Under mined resources?
Eimear Deady
British Geological Survey
8nd July, 2020
– REE & Gallium enrichment karstic bauxite & derivative ‘waste’ red mud.
– Enrichment mechanisms, mineral hosts, possible recovery approaches

Sn–W–Mo–Zn–Bi–U Mineralized Greisen Systems within the Mount Douglas Granite, Southwestern New Brunswick, Canada
Nadia Mohammadi
Carleton University
2nd July, 2020
– Late Devonian magmatic–hydrothermal mineralization linked to host intrusions & possible hidden late intrusions?
– LA–ICP–MS geochronology of greisen-related ore minerals (e.g. cassiterite, uraninite)

Structural evolution of two ore-bearing Paleoproterozoic supracrustal belts in the Kiruna area, northwestern Fennoscandian Shield
Joel Andersson
Luleå University of Technology
2nd July, 2020
– Four deformation & alteration stages unravelled for the Kiruna area, suggests basin inversion related to Fe–Cu mineralization.

Basin dewatering, early metamorphic fluids and reactivated basement faults in the genesis of metasediment-hosted orogenic gold deposits
Nick Oliver
HCOV Global & James Cook Univeristy
1st July, 2020
– A pre-peak metamorphic basinal source for some of the world’s biggest sediment-hosted gold deposits
– Basement ramp faults as exploration targets in covered terrane

Lithium Pegmatites – An African Story
Kathryn Goodenough
British Geological Survey
24th June, 2020
– Precambrian LCT pegmatite history across Africa
– Exploration challenges due to weathering & Li mobility

Precambrian atmosphere oxygen and ore deposits
Ross Large
CODES, University of Tasmania
24th June, 2020
– Precambrian atmospheric oxygen variations drive metallogenic cyclicity
– Pyrite chemistry in black shales as an oxygen proxy