Kresten Valentin R. Troll The Alnö Carbonatite Complex, Central Sweden GeoGuide Series editors Wolfgang...Kresten Valentin R. Troll • The Alnö Carbonatite Complex, Central Sweden 123 Peter Kresten Section for...Department of Earth Sciences Uppsala University Uppsala Sweden Valentin R. Troll Section for Mineralogy, Petrology...Department of Earth Sciences Uppsala University Uppsala Sweden ISSN 2364-6497 ISSN 2364-6500 (electronic) GeoGuide...this respect, the late Proterozoic Alnö igneous complex in central Sweden is one of the most classical localities