dc.contributor.author | Karlsen, Tor Arne | |
dc.coverage.spatial | 12312 Ulsvåg | |
dc.coverage.spatial | NARVIK | |
dc.coverage.spatial | HAMARØY | |
dc.date.accessioned | 2020-08-26T09:08:33Z | |
dc.date.available | 2020-08-26T09:08:33Z | |
dc.date.issued | 2000 | |
dc.identifier.uri | https://hdl.handle.net/11250/2674211 | |
dc.description.abstract | Potassic 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.iso | eng | |
dc.relation.ispartofseries | NGU Bulletin (436) | |
dc.rights | Navngivelse 4.0 Internasjonal | |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | |
dc.subject | FELTSPAT | |
dc.subject | GNEIS | |
dc.subject | PREKAMBRIUM | |
dc.subject | RESSURSKARTLEGGING | |
dc.title | Economic potential of potassic feldpar-rich gneisses in Tysfjord/ Hamarøy, northern Norway | |
dc.type | Journal article | |
dc.description.localcode | 49535 | |
dc.source.pagenumber | 129-135 | |