Igneous Rocks And Iron Ores of Kiirunavaara Luossavaara And Tuolluvaara
Igneous Rocks And Iron Ores of Kiirunavaara Luossavaara And Tuolluvaara
Per Adolf Geijer
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This porphyry district is at least as great as the western one. It extends nearly as far north as that and outcrops much further south. Its eastern border cannot be quite exactly determined as the relations between the metamorphic rocks occurring there and the porphyries are not very well known. The most important exposures are three groups: Mount Sakaravaara furthest north, Tuolluvaara Hill with the only workable ore deposit of the district, nearly 4 kilometers south of Sakaravaara, and Mount ...Vahaive 8 kilometers further south. There also occur a few small outcrops between Haukivaara and Tuolluvaara, along the rivulets Luossajoki and Rotsejoki and in some other places. The district in question is separated from the western one by the Hauki complex, whose youngest rock, as may be remembered, is a quartzitic sandstone. At Luossajoki the width of this complex may perhaps amount to 600 meters at the utmost. It is exposed for a width of about 200 meters, and about 2 kilometers further south it ceases altogether.
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