Halleflinta sentence example

halleflinta
  • The granulite, also called eurite and halleflinta, is the most important of the Pre-Cambrian formation, as it contains all the metalliferous deposits of Sweden.
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  • Sometimes they are surrounded by halleflinta and limestone, as at Dannemora, Langban, Pajsberg, and then carry manganiferous minerals.
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  • Argentiferous galena occurs at Sala in limestone, surrounded by granulite, and at Guldsmedshytta (province of Orebro) in dark halleflinta.
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  • Copper pyrites occur at Falun in mica-schists, surrounded by halleflinta.
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  • Besides the crystalline gneiss and halleflinta there are also sedimentary deposits which are believed to be of pre-Cambrian age.
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