Ground geophysical measurements made on mine-tailings in Sweden. Case studies and lessons learnt
(2023) 29th European Meeting of Environmental and Engineering Geophysics, Held at Near Surface Geoscience Conference and Exhibition 2023, NSG 2023 In 29th European Meeting of Environmental and Engineering Geophysics, Held at Near Surface Geoscience Conference and Exhibition 2023, NSG 2023- Abstract
Ground-based geophysical surveys were conducted at eight mine-tailings repositories during 2021 and 2022 to help preparing an inventory of potential sources of critical raw materials in mine-waste. Geophysical methods included ERT, DCIP, RMT, and tTEM. In this study, we show results obtained on two of the sites as an example. Integration of models of electrical properties, geological observations, historical orthophotos, and drillhole samples provided estimations of the thickness of tailings. The interpretation was extended to construct 3D models of the deposits. Moreover, the modelled electrical properties helped to study the variations in the grain size, porewater content and mineral chemistry. The used geophysical methods resulted in... (More)
Ground-based geophysical surveys were conducted at eight mine-tailings repositories during 2021 and 2022 to help preparing an inventory of potential sources of critical raw materials in mine-waste. Geophysical methods included ERT, DCIP, RMT, and tTEM. In this study, we show results obtained on two of the sites as an example. Integration of models of electrical properties, geological observations, historical orthophotos, and drillhole samples provided estimations of the thickness of tailings. The interpretation was extended to construct 3D models of the deposits. Moreover, the modelled electrical properties helped to study the variations in the grain size, porewater content and mineral chemistry. The used geophysical methods resulted in consistent estimations of the geophysical properties and the depth to the more resistive material below the tailings could therefore be determined with higher confidence. Variations in chargeability and phase response from inversion of DCIP data are generally more strongly related to variations in mineral content and grain size. A strong correlation was observed at one of the sites. Spectral IP measurements on samples showed Cole-Cole like spectra and a clear relationship between the frequency of the maximum phase angle and the grain size.
(Less)
- author
- Bastani, M. ; Brolin, C. ; Persson, L. ; Leroux, V. ; Martin, T. LU and Maurya, P.
- organization
- publishing date
- 2023
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- 29th European Meeting of Environmental and Engineering Geophysics, Held at Near Surface Geoscience Conference and Exhibition 2023, NSG 2023
- series title
- 29th European Meeting of Environmental and Engineering Geophysics, Held at Near Surface Geoscience Conference and Exhibition 2023, NSG 2023
- publisher
- European Association of Geoscientists and Engineers
- conference name
- 29th European Meeting of Environmental and Engineering Geophysics, Held at Near Surface Geoscience Conference and Exhibition 2023, NSG 2023
- conference location
- Edinburgh, United Kingdom
- conference dates
- 2023-09-03 - 2023-09-07
- external identifiers
-
- scopus:85182936703
- ISBN
- 9789462824607
- DOI
- 10.3997/2214-4609.202320120
- language
- English
- LU publication?
- yes
- id
- f6e160ef-3766-4f59-acdf-28525263a276
- date added to LUP
- 2024-02-16 14:17:47
- date last changed
- 2024-02-16 14:19:52
@inproceedings{f6e160ef-3766-4f59-acdf-28525263a276,
abstract = {{<p>Ground-based geophysical surveys were conducted at eight mine-tailings repositories during 2021 and 2022 to help preparing an inventory of potential sources of critical raw materials in mine-waste. Geophysical methods included ERT, DCIP, RMT, and tTEM. In this study, we show results obtained on two of the sites as an example. Integration of models of electrical properties, geological observations, historical orthophotos, and drillhole samples provided estimations of the thickness of tailings. The interpretation was extended to construct 3D models of the deposits. Moreover, the modelled electrical properties helped to study the variations in the grain size, porewater content and mineral chemistry. The used geophysical methods resulted in consistent estimations of the geophysical properties and the depth to the more resistive material below the tailings could therefore be determined with higher confidence. Variations in chargeability and phase response from inversion of DCIP data are generally more strongly related to variations in mineral content and grain size. A strong correlation was observed at one of the sites. Spectral IP measurements on samples showed Cole-Cole like spectra and a clear relationship between the frequency of the maximum phase angle and the grain size.</p>}},
author = {{Bastani, M. and Brolin, C. and Persson, L. and Leroux, V. and Martin, T. and Maurya, P.}},
booktitle = {{29th European Meeting of Environmental and Engineering Geophysics, Held at Near Surface Geoscience Conference and Exhibition 2023, NSG 2023}},
isbn = {{9789462824607}},
language = {{eng}},
publisher = {{European Association of Geoscientists and Engineers}},
series = {{29th European Meeting of Environmental and Engineering Geophysics, Held at Near Surface Geoscience Conference and Exhibition 2023, NSG 2023}},
title = {{Ground geophysical measurements made on mine-tailings in Sweden. Case studies and lessons learnt}},
url = {{http://dx.doi.org/10.3997/2214-4609.202320120}},
doi = {{10.3997/2214-4609.202320120}},
year = {{2023}},
}