NExUS Professional Development Workshops: Field Assessment of Gossans and Leached Caps

DATE-TIME

Date(s) - Monday, 04/04/2022
9:30 am - 5:30 pm ACST
Category(ies)

NExUS Professional Development Workshops
Online Workshop

Field Assessment of Gossans and Leached Caps

Date & Time

4th April, 2022

Venue

Online Workshop

Presented by

Dr. Roger Taylor and Dr. Richard Lilly

Dr Roger Taylor has been involved with the exploration industry for over 50 years operating as a practicing exploration / mine geologist and academic as Director of the Economic Geology Research Unit at James Cook University (1993-1998).

More recent activities include international consulting to numerous global mining companies, further development of a range of professional development courses, and petrological services. Major publications include books on tin deposits, ore textures-breccias, and gossans / leached outcrops. Major interests are magmatic related deposits, including tin, wolfram, porphyry copper, IOCG, and epithermal systems.

Co-Presented by

Dr. Richard Lilly is a senior exploration geologist with over 20 years experience spanning the industry-academia boundary. Working for Mount Isa Mines (2007-2015) and as an Embedded Research Fellow at the University of Adelaide he has coordinated and supervised >65 applied research investigations on a diverse range of ore deposits from North West Queensland to South Australia.

NExUS-Professional Development (NExUS-PD) workshops are very proud to be able to offer Roger Taylor’s highly regarded Field Assessment of Gossans and Leached Caps workshop online, co-presented by Dr. Richard Lilly.

This classic course introduces the principles and practices required for the visual field-scale assessment of leached outcrops for a range of deposit types. Special emphasis is placed on the surface expression of porphyry copper styles and their related oxide zones.

The workshop includes basic principles of oxidation above ore zones, formation of limonites, boxwork recognition and secondary mineral identification.

Session 1:

Theoretical perspectives – Types of leached capping and gossans – Structural preservation – Limonite types and terminology.

Session 2:

Secondary mineral recognition – factors governing their formation – Interpretation of assemblages (Fe, Mn, Cu, Pb, Zn, Fe, Ni, Ag) – Emphasis on copper oxide grouping.

Session 3:

Boxworks and related features – Model(s) of development – Overprinting effects – Rock versus sulphide styles – False boxworks.

Session 4:

Porphyry copper – leached cappings – assessment – their links to supergene enrichment and the development of oxide zones.

Each session approx. 90 minutes. Times TBC

REGISTRATION FEES

Full Registration: $250
AIG Members: $200
Students*: $25
*Limited free places available to international students, sponsored by OZ Minerals. Apply directly to Richard.Lilly@adelaide.edu.au