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Abstract
A dyke-like rock, exposed in a road cutting near Västervik, is described. It is composed of phlogopite, apatite, spinel and magnetite, with subordinate haematite, zircon and diaspore. A high temperature during intrusion is indicated by spinel—magnetite—symplectites and thermometamorphism in the wall-rock. At present, the intrusion cannot be correlated with any magmatogenic period within the area.