Chemostratigraphy of metamorphosed and altered Paleoproterozoic volcanic rocks associated with massive sulfide deposits at Rävliden and Kristineberg West, Skellefte district, Sweden
2003 (English)In: Mineral exploration and sustainable development: proceedings of the Seventh Biennial SGA Meeting, Athens, Greece, 24-28 August 2003 / [ed] D.G. Eliopoulos, Rotterdam: Millpress , 2003, 1103-1106 p.Conference paper, Meeting abstract (Other academic)
The Rävliden and Kristineberg massive sulfide deposits in northern Sweden are hosted by Paleoproterozoic volcanic rocks of the Skellefte group. At Kristineberg West, exploration drilling on the 1000 m level, 1 km west of the operating mine, has encountered various types of sulfide mineralization hosted by volcanic rocks. At Rävliden, a further 2.5 km to the west, massive sulfides occur near the top of the volcanic sequence, which is overlain by graphitic sedimentary rocks of the Vargfors group. In both areas, the original rock types generally cannot be identified visually, as the rocks are altered and metamorphosed to schistose assemblages including muscovite, chlorite, phlogopite, talc, quartz, cordierite, and andalusite. However, application of immobile-element methods to 165 new whole-rock analyses, together with relogging and petrographic observations, has allowed 6 main chemical rock types to be identified. These have been used to establish the chemostratigraphic sequence in each area. Mineralization is hosted mainly by rhyolites, of which there are at least three subtypes; intervals of dacite and andesite are also present. The sedimentary rocks that overlie the Rävliden ores have a distinctive composition that has not been found in the area of the Kristineberg West ores, which supports the idea that the latter ores lie lower in the Skellefte group than the Rävliden ores.
Place, publisher, year, edition, pages
Rotterdam: Millpress , 2003. 1103-1106 p.
Research subject Ore Geology
IdentifiersURN: urn:nbn:se:ltu:diva-39016Local ID: d9861f90-56d9-11dc-a7ae-000ea68e967bISBN: 90-77017-77-1 (print)OAI: oai:DiVA.org:ltu-39016DiVA: diva2:1012524
Biennial SGA Meeting : 24/08/2003 - 28/08/2003
Godkänd; 2003; 20070830 (ysko)2016-10-032016-10-03Bibliographically approved