Sources of Hydrothermal Fluids Inferred from Oxygen and Carbon Isotope Composition of Calcite, Keweenaw Peninsula Native Copper District, Michigan, USA, Thomas Bodden, Theodore J. Bornhorst, Florence Bégué, Chad Deering
Michigan Tech Publications

Copper Isotope Constraints on the Genesis of the Keweenaw Peninsula Native Copper District, Michigan, USA: Reply, Theodore J. Bornhorst, Ryan Mathur
Michigan Tech Publications

The Svecofennian gabbro-hosted Koivusaarenneva magmatic ilmenite deposit, Kälvä, Finland, Niilo K. Kärkkäinen, Theodore J. Bornhorst
Michigan Tech Publications