uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
Downhole Physical Properties Measurements Supporting Iron-oxide Deep Exploration and Mining in Blötberget, Sweden
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Geophysics.
(Applied Geophysics)
Nordic Iron Ore.
2016 (English)Conference paper, Abstract (Refereed)
Abstract [en]

Several physical properties including full-waveform triple sonic, natural gamma, susceptibility, formation and fluid conductivity from downhole geophysics as well laboratory measurements (density, RQD and magnetite content) were carried out and analysed in order to characterize iron-oxide mineralization and their host rocks in the Blötberget mining area in south-central Sweden. It was observed that a strong seismic signal from the mineralization would be generated and that full-waveform sonic data could be used as proxy for fracture mapping and rock quality definition. Fracture systems were also believed to generate modest reflectivity from the calculation of reflection coefficients. While properties like magnetite content or density were clearly indicative of the magnetite mineralization, magnetic susceptibility plots indicated little paramagnetic effect; even host rocks showed ferromagnetic behaviour. We attribute this to a general enriched magnetite mineralization in most types of rocks. This observation is interesting since it may allow joint inversion of gravity and magnetic data possible and thus an estimation of the mineralization tonnage and magnetite content.  

Place, publisher, year, edition, pages
Barcelona-Spain, 2016.
National Category
Geophysics
Identifiers
URN: urn:nbn:se:uu:diva-303366DOI: 10.3997/2214-4609.201602092OAI: oai:DiVA.org:uu-303366DiVA: diva2:971659
Conference
Near Surface Geoscience 2016 - First Conference on Geophysics for Mineral Exploration and Mining
Funder
VINNOVA
Available from: 2016-09-18 Created: 2016-09-18 Last updated: 2016-09-19Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Maries, GeorgianaMalehmir, Alireza
By organisation
Geophysics
Geophysics

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 12 hits
ReferencesLink to record
Permanent link

Direct link