Xin Zhong¹, Arianne Petley-Ragen¹, Sarah Hatice Maria Incel¹, Marcin Dabrowski^1,2, Häkon Austrheim¹, Niels Højmark Andersen³ and Bjorn Jamtveit¹, (1)University of Oslo, Oslo, Norway, (2)Polish Geological Institute - NRI, Wroclaw, Poland, (3)University of Oslo, Department of Chemistry, Oslo, Norway