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Mineralisation paragenesis of the Liikavaara Cu-(W-Au) deposit, northern Sweden
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.ORCID iD: 0000-0002-0935-3430
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.ORCID iD: 0000-0003-4711-7671
Boliden AB, Exploration Department.
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2017 (English)In: Mineral Resources to Discover / [ed] Mercier Langevin, P; Dube, B; Bardoux, M; Ross, PS; Dion, C, Society for Geology Applied to Mineral Deposits , 2017, p. 971-974Conference paper, Published paper (Refereed)
Abstract [en]

The Liikavaara Cu-(W-Au) deposit is located in the Gallivare ore district in northern Sweden, a few kilometres east of the renowned Aitik Cu-(Au) deposit. Its enrichment in Critical Raw Materials and its scheduled production for the near future make the Liikavaara deposit ideal as the subject of a case study on improved ore characterisation using various micro-analytical techniques. Here we present a general overview of the mineralogy in Liikavaara to provide a base for future micro-analytical studies. The deposit lies within Palaeoproterozoic volcanosedimentary rocks of andesitic composition. A unit of biotite schist hosts the ore. Mineralisation in Liikavaara is mainly controlled by quartz-(calcite)-(tourmaline) veins. Aplitic dykes and calcite veinlets also cut the deposit. Ore minerals are chalcopyrite, pyrrhotite, pyrite, sphalerite, galena, and molybdenite. Non-sulfide sources include scheelite and minor magnetite. The deposit is affected by alteration such as sericitisation, calcification, tourmalinisation, epidotisation, and chloritisation. The genesis of the deposit is up to today not determined and studies are few. However, the deposit's spatial proximity to a mineralised granodiorite dated at ca. 1.87 Ga offer some similarities to the Aitik deposit and its 1.89 Ga quartz monzodiorite. A primary magmatic origin with later IOCG overprint could therefore be a possibility.

Place, publisher, year, edition, pages
Society for Geology Applied to Mineral Deposits , 2017. p. 971-974
National Category
Geology
Research subject
Ore Geology; Ore Geology
Identifiers
URN: urn:nbn:se:ltu:diva-70289ISI: 000439764100240ISBN: 978-2-9816898-0-1 (print)OAI: oai:DiVA.org:ltu-70289DiVA, id: diva2:1237489
Conference
14th SGA Biennial Meeting on Mineral Resources to Discover, Quebec City, Canada, AUG 20-23, 2017
Available from: 2018-08-09 Created: 2018-08-09 Last updated: 2018-08-09Bibliographically approved

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Warlo, MathisMartinsson, OlofWanhainen, Christina

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