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dc.contributor.authorKarlsen, Tor Arne
dc.coverage.spatial12312 Ulsvåg
dc.coverage.spatialNARVIK
dc.coverage.spatialHAMARØY
dc.date.accessioned2020-08-26T09:08:33Z
dc.date.available2020-08-26T09:08:33Z
dc.date.issued2000
dc.identifier.urihttps://hdl.handle.net/11250/2674211
dc.description.abstractPotassic feldspar gneiss in the Tysfjord\/Hamarøy area may be potential resource for future exploitation. The rock consists primarily of microcline (up to 84%) and quartz (up to 35%) together with small amounts of plagioclase (1-12%), commonly albite. Accessory minerals include epidote, micas and magnetite. Six deposits have been indicated by mapping. All are situated within a supracrustal suite of Precambrian age (2500-2100 Ma) dominated by a feldspathic gneiss. The quality of the rocks is largely dependent on the texture and grain size, as a fine grain size and complex grain boundaries make separation of the different minerals difficult.
dc.language.isoeng
dc.relation.ispartofseriesNGU Bulletin (436)
dc.rightsNavngivelse 4.0 Internasjonal
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no
dc.subjectFELTSPAT
dc.subjectGNEIS
dc.subjectPREKAMBRIUM
dc.subjectRESSURSKARTLEGGING
dc.titleEconomic potential of potassic feldpar-rich gneisses in Tysfjord/ Hamarøy, northern Norway
dc.typeJournal article
dc.description.localcode49535
dc.source.pagenumber129-135


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    Artikler fra seriene NGU, NGU Bulletin og NGU Skrifter

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Navngivelse 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Navngivelse 4.0 Internasjonal