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

Simple item page
dc.contributor.authorCook, N.
dc.contributor.authorCiobanu, C.
dc.contributor.authorDanushevskiy, L.
dc.date.issued2007
dc.description.abstractGold 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 <1 ppm at Moberg (Norway). The present dataset shows that Bi-chalcogenides may, in some cases, be considered as gold carriers, and can contain gold at similar levels as pyrite. Measured concentrations in tellurobismuthite are, with the exception of Glava, lower than those obtained in published experimental work on that mineral. This is interpreted as due to the formation of discrete sub-􀈝m sized inclusions of gold within the Bi-minerals during post-depositional overprinting. The influence of metamorphism is clearly an important factor in determining the distribution of gold within Bi-chalcogenides.
dc.description.statementofresponsibilityNigel J. Cook, Cristiana L. Ciobanu and Leonid Danushevskiy
dc.identifier.citationGeologian Tutkimuskeskus. Opas, 2007; 53:23-30
dc.identifier.issn0781-643X
dc.identifier.orcidCook, N. [0000-0002-7470-3935]
dc.identifier.urihttp://hdl.handle.net/2440/46565
dc.language.isoen
dc.publisherGeologian Tutkimuskeskus
dc.source.urihttp://arkisto.gtk.fi/op/op53.pdf
dc.subjectgold ores
dc.subjecttellurobismuthite
dc.subjectlaitakarite
dc.subjectgold
dc.subjectlaser ablation
dc.subjectICP mass spectra
dc.subjectOrivesi
dc.subjectOrijärvi
dc.subjectFinland
dc.subjectGlava
dc.subjectSweden
dc.subjectMoberg
dc.subjectNorway
dc.titleLA-ICP-MS determination of gold in Bi-chalcogenides from four deposits in the Fennoscandian Shield
dc.typeJournal article
pubs.publication-statusPublished

Files

Collections

Earth and Environmental Sciences publications