Đăng ký bk8

Skip to main content

Event recap – Webinar: The Geological Characteristics and Geochemical Signature of Porphyry Copper-(Gold) Deposits in the Circum-Pacific: Why it is not all About the Potassic Zone

Geoscience Society
29 Oct 2020 · 300 words, 3 minute read

Webinar overview

Porphyry deposits of the circum-Pacific region contain a large amount of the world’s copper, molybdenum and gold. These deposits are formed from calc-alkaline and potassic magmas characterized by varying oxidation states (fO2), which contribute to different ore mineral assemblages and contrasting relationships to hydrothermal alteration zones. Gold-rich porphyry copper deposits are typically characterized by hydrous and highly oxidized causal magmas. Variations in the styles of geology and mineralization contribute to differing geochemical expressions and geophysical signatures of the porphyry deposits. Exploration programs that integrate high-quality geological mapping and drill-core logging with a three-dimensional understanding of geochemical and geophysical data will facilitate the path to discovery. The major topics of this talk will include:
  1.  Introduction to porphyry systems
  2. General geology, hydrothermal alteration and geochemical zoning
  3. Roles of fO2, fS2 and H2O in porphyry mineralization
  4. Deposit examples – Batu Hijau (Indonesia) and Alpala (Ecuador)
  5. Summary of geometry, geology and geochemical expression of porphyry systems

About the Presenter:

Steve Garwin has more than 32 years of experience as an exploration geologist with large and small mining companies. He has participated in the gold and copper projects of more than 33 clients in over 18 countries. He worked with Newmont Mining for ten years, including two years as Chief Geologist in Nevada. Steve is a fellow of the Society of Economic Geologists, fellow of the Australian Institute of Geoscientists and a fellow of the Australian Institute of Mining and Metallurgy. Steve is one of the leading authorities on porphyry, epithermal and Carlin-style mineralization in the circum-Pacific region. He has been involved in several, major exploration and mining projects, including the Batu Hijau porphyry mine in Indonesia, the mines of the Carlin and Battle Mountain Trends in Nevada, and the recently discovered world-class Alpala porphyry deposit in Ecuador. Steve is an independent consultant based in Perth, Australia. He obtained his B.Sc. in geology from Stanford, M.Sc. from the University of British Columbia and Ph.D. (distinction) from the University of Western Australia. He is an adjunct research fellow at the Centre for Exploration Targeting at UWA and has authored and co-authored more than 40 scientific papers and abstracts. Steve is chief technical advisor to SolGold Plc. (SOLG:L and SOLG:TSX-V) and technical advisor to Japan Gold Corp (JG:TSX-V).

Upcoming events

Tasmania Branch

14th Annual Geoscience Forum 2024

Tullah
28 Nov 2024
Kalgoorlie Branch

MetFest Kalgoorlie 2024

Kalgoorlie
18-20 Sep 2024
New Zealand Branch

New Zealand Branch Annual Conference 2024

Wellington NZ
19 - 21 Aug 2024
North Queensland Branch

Sir George Fisher Lecture 2024

Townsville
19 Jul 2024
Far North Queensland Branch

Resourceful FNQ 2024 Annual Forum and Dinner

7
PD HOURS
Cairns
7 Jun 2024
New Professionals Network

Industry Connect Virtual Forum Series (National)

1
PD HOURS
30 May 2024
Webinar

Our site uses cookies

We use these to improve your browser experience. By continuing to use the website you agree to the use of cookies.
vn 888 casino vn88 vn88linkvn88 nhà cái ee88 welcome ee88 trò chơi xổ số