Ancient and Modern Volcanic-hosted Massive Sulfide Deposits

Ancient and Modern Volcanic-hosted Massive Sulfide Deposits

Date: Friday, February 28, 2025
Time: 8:50am - 4:30pm EST (UTC-5)
Location: Royal Ontario Museum | Toronto, ON, Canada
Presenter: J. Bruce Gemmell
Format: In-person workshop consisting of dynamic lectures supplemented with generous lab time for investigating unique hand specimens from the Royal Ontario Museum's Kirwin Collection.

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Description

This one-day workshop is designed for exploration geologists and will include an overview of the geology, genesis, and exploration for volcanic-hosted massive sulfide (VHMS) deposits. Topics to be covered include general features, classification schemes, tectonic setting, mineralogy and textures, metal zoning, and ore equivalent horizons. The characteristics and diagnostic features of seafloor and sub-seafloor genetic models will be reviewed. The mineralogy, assemblages and zoning and geochemistry of hydrothermal alteration will be discussed, as well as exploration techniques and strategies for VHMS deposits. The workshop will end with an examination of modern seafloor mineralizing hydrothermal systems and a comparison of these to ancient VHMS deposits.

The workshop format comprises a series of lectures, where ore genesis and application to mineral exploration will be emphasized. This will be supplemented by generous laboratory time for reviewing and interpreting multiple suites of remarkable VHMS hand specimens at the Royal Ontario Museum's mineral classroom.

This offering is directed towards economic geology graduate students and professionals working within the exploration industry who wish to have a greater understanding of the geology, genesis, and exploration strategies for volcanic-hosted massive sulfide systems.

Agenda

8:50am: Introduction by Dr Kim Tate (ROM) and Duncan Proctor (SEG)

9:00am: VHMS deposits – Introduction

9:30am: Hand sample viewing and discussion

10:00am: VHMS deposits – Introduction (2)

10:30am: Hand sample viewing and discussion

11:00am: Coffee break

11:30am: VHMS Deposits – genesis and hydrothermal alteration

12:30am: Hand sample viewing and discussion

1:00pm: Lunch

2:00pm: Exploration criteria

2:30pm: Hand sample viewing and discussion

3:00pm: Seafloor hydrothermal systems

4:00pm: Hand sample viewing and discussion

4:30pm: Adjourn

Presenter

Headshot

J. Bruce Gemmell

Gemmell Geoscience

SEG Fellow

J. Bruce Gemmell obtained his B.Sc. in 1979 from UBC, Canada and M.A. (1982) and PhD (1987) from Dartmouth College, USA. Bruce worked at the Centre of Excellence in Ore Deposits and Exploration Science (CODES) at the University of Tasmania, Australia for 30 years, where he served as Head of the School of Earth Sciences and Director of CODES.

At CODES, Bruce conducted research on a wide range of ore deposit types, including VHMS deposits, LS-IS-HS epithermal deposits, structurally-controlled copper deposits, as well as modern seafloor hydrothermal systems. He specializes in mineralogy and geochemistry of hydrothermal alteration and its application to exploration. He, along with collaborators, also developed process-based exploration models focusing on mineral chemistry zoning in porphyry-epithermal deposit environments.

Bruce has published over 100 papers in international peer-reviewed journals, was a past President of the Society of Economic Geologists (SEG - 2018), Associate editor for Economic Geology and the former technical editor for the SEG’s newsletter, SEG Discovery. Since leaving CODES in 2017, Bruce has become a consultant to the minerals industry where he has undertaken consulting in Australia, Canada, USA, Mexico, Turkey, Argentina, Peru, Sweden, Fiji, Indonesia, Kazakhstan and Mongolia.

About the Royal Ontario Museum (ROM)

ROM logo

ROM showcases art, culture and nature from around the world and across the ages. Canada's largest and most comprehensive museum is home to a world-class collection of 13 million artworks, cultural objects and natural history specimens, featured in 40 gallery and exhibition spaces. As the country's preeminent field research institute and an international leader in new discoveries, ROM plays a vital role in advancing our understanding of the artistic, cultural and natural world. www.rom.on.ca/en

Registration

Early deadline: February 21, 2025
Regular deadline: February 26, 2025

Maximum participants: 22

  Early Regular
SEG Member US$495 US$595
SEG Student Member* US$75 US$95
Non-member US$595 US$695
All prices are in United States dollars (USD). SEG reserves the right to cancel this event should minimum attendance numbers not be met by February 21, 2025. All registrants will be given a full refund should SEG cancel the course. Cancellation policy, event photography, dietary restrictions, and more are detailed in the SEG Terms and Conditions.
* Five spaces are reserved for students and offered at a discounted rate. Once the limit is met that registration option will become unavailable.
When
2/28/2025 8:50 AM - 4:30 PM
Where
Royal Ontario Museum Mineral Classroom 100 Queens Park Toronto, ON M5S 2C6 CANADA
Sign in or create an account to register Last day to register is 2/26/2025
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