Development of a textural acid rock drainage index for classifying acid formation

Parbhakar-Fox, Anita, Edraki, Mansour, Bradshaw, Dee and Walters, Steve (2011). Development of a textural acid rock drainage index for classifying acid formation. In: Maarten A.T.M. Broekmans, 10th lCAM Proceedings. 10th International Congress for Applied Mineralogy, Trondheim, Norway, (513-521). 1-5 August 2011.

Attached Files (Some files may be inaccessible until you login with your UQ eSpace credentials)
Name Description MIMEType Size Downloads
Author Parbhakar-Fox, Anita
Edraki, Mansour
Bradshaw, Dee
Walters, Steve
Title of paper Development of a textural acid rock drainage index for classifying acid formation
Conference Paper Type Fully Published Paper
Conference name 10th International Congress for Applied Mineralogy
Conference location Trondheim, Norway
Conference dates 1-5 August 2011
Proceedings title 10th lCAM Proceedings
Editor Maarten A.T.M. Broekmans
Place published Trondheim, Norway
Publisher International Congress for Applied Mineralogy
Publication date 2011
ISBN 9788273851390
Start page 513
End page 521
Total pages 9
Collection year 2012
Language eng
Abstract/Summary Textural analyses are largely absent from predictive ARD (acid rock drainage) assessments despite the direct control of texture on acid formation. Therefore, the ARD Index (ARDI) was developed as a simple textural evaluation to be used as a stage 1 test as part of an integrated geochemistry-mineralogy-texture (GMT) approach to predicting ARD. Parameters A, Band C (ranked from 0 to 10) examined contents, degree of alteration and morphology of sulphides, while parameters D and E (ranked from -5 to 10) evaluated the neutralising mineral content and the spatial relationship between acid-forming and neutralising minerals. Scores from each category were totaled with values 50-41 considered as extremely acid forming (EAF); 40-31 as acid forming (AF); 30-21 as potentially acid forming (PAP); 20-11 as nor acid forming (NAF); 10-0 as NAF/ANC and -1 to -10 as having acid-neutralising capacity (ANC). The ARDI was tested using samples from an abandoned lode-gold mine and an operational iron-oxide copper gold mine, both located in Queensland, Australia. Samples were mesotexturally grouped (A-Q) and analysed as per the GMT approach. The ARD identified group J (quartz-pyrite), H (quartz--arsenopyrite-pyrite) and G (quartz-galena-sphalerite) from the lode-Au operations as the most acid forming.
Keyword Acid rock drainage
Texture
Static tests
Prediction
Q-Index Code EX
Q-Index Status Confirmed Code
Institutional Status UQ

 
Versions
Version Filter Type
Citation counts: Google Scholar Search Google Scholar
Access Statistics: 70 Abstract Views, 4 File Downloads  -  Detailed Statistics
Created: Tue, 16 Aug 2011, 14:55:00 EST by Karen Holtham on behalf of Sustainable Minerals Institute