Bakgrunn og aktiviteter
Courses taught
TGB4125 Mineralogy: Includes main priciples in crystal chemistry, crystallographic from both a theoretical and applied prespective. Practical skills achieved includes optical transmitted light microscopy, crystallographic plotting and mineral formula recalculation.
TGB4130 Petrology: Fundamental principles og igneous and metamorphic petrology and geochemistry.
Research interests
Involved in research within petrology, structural geology, ore deposits and applied mineralogy.
EBSD
Involved in the development of the SEM-lab, including our state of the art EBSD equipment. My special focus here is the improovement of indexing and phase discrimination between complicated low symmetry geological materials. We now have an impressive indexing percenttage of quartz abowe 98%. We currently ressearch on crystallographic fabric development in quartz, including the influence of twinning.
Data are collected using TSL-OIM sofware and then transferred into MTEX for more advanced analysis. We have exellent analysis facilitis and encourage scientiffic colaboration.
EBSD patterns dyed green, showing the change in pattern when crossing a Dauphiné twin boundary. Original by Bjørn Eske Sørensen (2001)
Links
Vitenskapelig, faglig og kunstnerisk arbeid
Et utvalg av nyere tidsskriftspublikasjoner, kunstneriske produksjoner, bok, inklusiv bokdeler og rapport-del. Se alle publikasjoner i databasen
Tidsskriftspublikasjoner
- (2017) Measurement of particle size distribution and specific surface area for crushed concrete aggregate fines. Advanced Powder Technology. vol. 28 (3).
- (2016) Crystallization and uplift path of late Variscan granites evidenced by quartz chemistry and fluid inclusions: Example from the Land's End granite, SW England. Lithos. vol. 252-253.
- (2016) Orogenic degassing, scapolitization and K-metasomatism during Caledonian exhumation, Helgeland, Norway. Norsk Geologisk Tidsskrift. vol. 96 (3).
- (2015) The Late Mesoproterozoic Sirdal Magmatic Belt, SW Norway: Relationships between magmatism and metamorphism and implications for Sveconorwegian orogenesis. Precambrian Research. vol. 265.
- (2015) Late-magmatic immiscibility during batholith formation: assessment of B isotopes and trace elements in tourmaline from the Land’s End granite, SW England. Contributions to Mineralogy and Petrology. vol. 169 (6).
- (2015) Brittle-viscous deformation of vein quartz under fluid-rich lower greenschist facies conditions. Solid Earth. vol. 6 (2).
- (2013) Occurrence of iron in industrial granitic pegmatite. Minerals Engineering. vol. 52.
- (2013) A revised Michel Lévy interference colour chart based on first-principles calculations. European journal of mineralogy. vol. 25 (1).
- (2012) Quantitative assessment of alkali-reactive aggregate mineral content through XRD using polished sections as a supplementary tool to RILEM AAR-1 (petrographic method). Cement and Concrete Research. vol. 42 (11).
- (2012) Evaluation of quantitative X-ray diffraction for possible use in the quality control of granitic pegmatite in mineral production. Minerals Engineering. vol. 39.
- (2010) Phase compositions of manganese ores and their change in the process of calcination. International Journal of Mineral Processing. vol. 94 (3-4).
- (2009) Coupled trace element mobilisation and strain softening in quartz during retrograde fluid infiltration in dry granulite protoliths. Contributions to Mineralogy and Petrology. vol. 157 (2).
- (2009) Origin and implications of zoned amphiboles and other hydrous silicates during aqueous brine infiltration in the Bamble mega shearzone, S-Norway. EOS : Transactions. vol. 90 (52).
- (2008) Formation and cross cumulus migration of residual melts in the Skaergagaard Intrusion, East Greenland. EOS : Transactions. vol. 89 (53).
- (2005) IGNEOUS REFINEMENT OF QUARTZ RAW-MATERIALS. Abstracts with programs (Geological Society of America). vol. 37 (7).
- (2005) Fluid-related recovery and deformation textures in quartz in partly retrogressed high-grade quartzites from the Bamble sector. EOS : Transactions. vol. 86 (52).
Del av bok/rapport
- (2012) Assessment of Individual ASR-Aggregate Particles by XRD. Proceedings of the 10th International Congress for Applied Mineralogy (ICAM).
- (2012) Quantitative mineral characterization of granite pegmatite using Topas Rietveld XRD refinement. Proceedings of the 10th International Congress for Applied Mineralogy (ICAM).
- (2011) Assessment of individual ASR-aggregate particles by XRD. Proceedings of the 10th International Congress for Applied Mineralogy (ICAM).
- (2010) Properties of manganese ores and their change in the process of calcination. INFACON XII 2010, Proceedings of The twelfth international ferroalloys congress. Sustainable Future. Volume I + II.