Abstract

Based on microscopic study of thin sections of the magmatic iron ores from the Routevare region, Lapland, Axel Gavelin2 published in 1916 a comprehensive paper on the occurrence of “a new rock-forming mineral,” which he named hoegbomite in honor of Professor A. G. Högbom of the University of Upsala. According to Gavelin the hoegbomite occurs chiefly in the iron-rich but silicate-free types of the iron ores. In addition to the predominant minerals, magnetite and ilmenite, hoegbomite is associated with pleonaste and corundum, and subordinate hydrargillite and pyrrhotite. Amphibole and chlorite sometimes occur as minor silicate constituents.

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