WA Branch Chemaraderie September 2021

September WA Branch Chemaraderie at Curtin University. All welcome.

Come to the September Chemaraderie 


5.30pm    Wednesday 22nd September

Curtin University, Exhibition Space, Building 500,

Kathryn Linge, Analytical Chemist from ChemCentre will give us a presentation entitled "CHARACTERISATION OF MINE PIT LAKE CHEMISTRY TO INFORM MINE CLOSURE AND ENVIRONMENTAL MANAGEMENT"

Western Australia has more than 2000 mine voids, many of which fill with water when dewatering of the void is discontinued after mining ceases. Mine pit lakes are complex systems to assess for long-term environmental impact and  there are gaps in understanding the geochemistry and environmental impact of the pit lakes that form. In this project we have compiled the first comprehensive dataset of mine pit lake water quality in Australia, sampling 26 pit lakes across Western Australia. Pit lakes of a variety of ages and environmental conditions, and from a variety of representative geologies, mineralogies and hydrogeological situations have been sampled, providing a “time capsule” of how future systems are likely to behave. The water quality of each mine pit lake was measured at regular depth intervals throughout the water column, in order to identify oxic and anoxic regions within each pit lake. Analysis of water samples include field measurement of water quality parameters (e.g. pH, oxidation/reduction potential, conductivity), and laboratory anlysis of wide suite of major and trace elements, nutrients, salinity, turbidity and dissolved organic carbon. This water quality analysis has been complemented by comprehensive analysis of representative pit wall rock and sediment samples from each pit lake, as well as data mining of existing water quality databases sourced from project collaborators (CSIRO and DWER) and industry participants.This dataset has provided new insight into mine pit lake water quality with the information assisting both Government regulators and industry by providing more certainty for mine closure.


All welcome- RACI membership is not a prerequisite to attendance (so please bring a friend).

Please register so that this event can be adequately prepared for.

$5 cover charge at door for refreshments. Gold coin for students.


Wednesday 22 September 2021


From 5.30pm. Seminar/presentation commences at ~ 6.15pm. Refreshments prior and at conclusion.


Exhibition Area, Building 500, Curtin University

9/22/2021 5:30 PM - 9:00 PM
W. Australia Standard Time

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