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Effectively linking mining geology with waste management – a case study from western Tasmania

Citation

Parbhakar-Fox, A and Lottermoser, BG, Effectively linking mining geology with waste management - a case study from western Tasmania, Proceedings of the Tenth International Mining Geology Conference, 20-22 September 2017, Hobart, Tasmania (2017) [Refereed Conference Paper]


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Official URL: http://www.mininggeology.ausimm.com.au/

Abstract

Management of solid mine wastes, particularly waste rock, requires careful planning to reduce the likelihood of sulfi de oxidation, and generation of acid rock drainage (ARD). Waste management strategies must focus on obtaining a thorough understanding of the environmental characteristics of future waste rock materials. In this study, a waste management strategy for characterising underground waste rock was developed at a polymetallic underground mine in western Tasmania to determine which materials were appropriate for surfi cial placement. The criteria for surfi cial placement set by the regulator were that materials had to be non-acid forming and nonmetalliferous. A range of cost-effective fi eld-based tools, mineralogical assessments and mineral chemistry techniques were used on a suite of representative drill core material to determine an appropriate waste management strategy. Ultimately, a modifi ed geochemistry–mineralogy– texture–geometallurgy (GMTG) approach was designed, whereby geoenvironmental focused logging and simple prescreening tools such as paste pH and sulfur analyses were used at stageone; routine acid base accounting and leachate tests at stage-two; and validation tools including X-ray diffractometry and laser ablation inductively coupled plasma-mass spectrometry (ICPMS) at stage-three. This approach should be considered for other mine sites at early and operational life-of-mine stages with similar deposit characteristics, to ensure correct screening and placement of potentially hazardous waste materials in suitable above-ground waste repositories or mined-out mine sections.

Item Details

Item Type:Refereed Conference Paper
Keywords:acid mine drainage, waste management, sulphide, mining, mine planning
Research Division:Earth Sciences
Research Group:Geochemistry
Research Field:Exploration Geochemistry
Objective Division:Environment
Objective Group:Land and Water Management
Objective Field:Mining Land and Water Management
Author:Parbhakar-Fox, A (Dr Anita Parbhakar-Fox)
ID Code:121783
Year Published:2017
Deposited By:CODES ARC
Deposited On:2017-10-16
Last Modified:2017-11-20
Downloads:0

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