LA-ICP-MS determination of gold in Bi-chalcogenides from four deposits in the Fennoscandian Shield

Gold concentrations in Bi-chalcogenides (tellurobismuthite and laitakarite) from four deposits in the Fennoscandian Shield have been determined by LA-ICP-MS. Both minerals contain gold above background levels, with tellurobismuthite from Orivesi (Kutamejärvi), Finland, with concentrations between 1 and more than 300 ppm. The concentrations of gold vary over two orders of magnitude within individual analysed patches. The gold signal in the majority of individual LA-ICP-MS profiles is irregular. Laitakarite from Orijärvi (Finland) contains lesser concentrations (up to 10 ppm). Tellurobismuthite in two Sveconorwegian orogenic gold occurrences differ markedly; 798 and 2,472 ppm in Glava (Sweden) and