Dr. Robert Linnen

Bob Linnen

Associate Professor
Robert Hodder Chair in Economic Geology
Ph.D. McGill University, 1992
Office: BGS 1000B
Phone: 519-661-2111 x.89207
Fax: 519-661-3198
Email: rlinnen@uwo.ca


Research Interests

My research focuses on the behaviour of metals in magmatic-hydrothermal systems. My approach is to combine field and experimental studies in order to identify the mechanisms that are important for concentrating metals and controlling mineralization, then quantify these processes in order to develop ore deposit models.

Selected Publications

Botcharnikov, R.E., Linnen, R.L., Wilke, M., Holtz, F., Jugo, P.J. and Berndt, J., Gold fertility of sulfur-bearing magmas, Submitted to Nature Geoscience.

Bartels, A., Vetere, F., Holtz, F., Behrens, H. and Linnen, R.L., Viscosity of flux-rich pegmatitic melts. Submitted to Contrib. Mineral. Petrol.
Blaine, F., Linnen, R.L., Holtz, F. and Bruegmann, G.E., The effect of Cl on Pt solubility in haplobasaltic melt and evidence for fluid transport of PGEs. Submitted to Geochim. Cosmochim. Acta.
Dix G.R., Sharma, S., Al-Aasm, I.S., Coniglio, M., Linnen, R., Riva, J.F.V. and Achab, A., 2010, Origin of hydrothermal marine dolomite and phosphate in Upper Ordovician platform carbonates of the craton-interior Timiskaming outlier, Canada. Amer. Jour. Sci. (in press).
Bartels, A., Holtz, F. and Linnen, R.L., 2010, Solubility of manganotantalite and manganocolumbite in pegmatitic melts. Amer. Mineral. 95, 537-544.
Botcharnikov, R.E., Linnen, R.L. and Holtz, F., 2010, Solubility of Au in Cl- and S-bearing hydrous silicate melts. Geochim. Cosmochim. Acta 74, 2396–2411.
Brand, A.A., Groat, L.A., Garland, M.I., Linnen, R.L., Breaks, F.W. and Giuliani, G., 2009, Emerald mineralization associated with the Mavis Lake Pegmatitic Group, near Dryden, Ontario. Can. Mineral. 47, 315-336.
Van Lichtervelde, M., Gregoire, M., Didier, B., Salvi, S. and Linnen, R.L., 2008, Trace element geochemistry by laser ablation ICP-MS of micas associated with Ta mineralization in the Tanco pegmatite, Manitoba, Canada. Contrib. Mineral. Petrol. 155, 791-806.
Van Lichtervelde, M., Linnen, R.L., Salvi, S. and Didier, B., 2007, Textures and chemical evolutions in tantalum oxides: a discussion of magmatic versus metasomatic origins for Ta mineralization in the Tanco Lower Pegmatite, Manitoba, Canada. Econ. Geol. 102, 257-276.
Turner, D., Groat, L.A., Hart, C.J.R., Mortensen, J.K., Linnen, R., Giuliani, G. and Wengzynowski, W., 2007, Mineralogical and geochemical study of the True Blue aquamarine showing, southern Yukon. Can. Mineral. 45, 203-227.
Van Lichtervelde, M., Linnen, R.L., Salvi, S. and Didier, B., 2006, Evaluating the role of metagabbro rafts on tantalum mineralization in the Tanco pegmatite, Manitoba. Can. Mineral. 44, 625-644.
Farges, F., Linnen, R.L. and Brown, G.E. Jr., 2006, Redox and speciation of tin in hydrous silicate glasses: A comparison with Ta, Mo and W. Can. Mineral. 44, 795-810.
Piilonen, P.C., Farges, F., Linnen, R.L., Brown, G.E.Jr., Pawlak, M., and Pratt, A., 2006, Structural environment of Nb5+ in dry and fluid-rich (H2O, F) silicate glasses: A combined XANES and XAFS study including a novel approach to ICP-AES analysis of micro materials. Can. Mineral. 44, 775-794.

Courses Taught

Earth Sciences 3313A/B - Igneous Petrology
Earth Sciences 4432A/B - Geochemistry of Metals, Melts and Fluids in the Earth’s Crust

Geology 9552A/B - Advanced Mineral Deposit Geochemistry

Students

Xudong Che (current PhD, with Ru Cheng Wang, Nanjing, China) Comparison of accessory minerals from tungsten deposits in China and Canada.

Andrea Friese (current PhD) Origin of rare-metal pegmatites

Kremer, P. (current MSc, with Shoufa Lin) Structural controls of pegmatite emplacement in the Bernic Lake area, Manitoba.

Abdullah Aseri (current MSc) Fluid-melt partitioning of high field strength elements in highly fluxed silicate melts

Mancini, L. (current MSc, with Mario Coniglio, Waterloo) Aspects of the diagenesis of Ordovician limestone from the Lake Simcoe region.

Niloufar Naderi (current MSc) A stable isotope and fluid inclusion investigation of Au mineralization at the syentite-hosted Young-Davidson deposit at Matachewan, Ontario.

Ryan Martin (current MSc) Geochemical controls of Au mineralization at the syentite-hosted Young-Davidson deposit at Matachewan, Ontario.

Ryan Ruthart (current MSc) Genesis of PGE mineralization of the W Horizon at the Marathon deposit, Ontario.

Blaine, F., (PhD, 2010) The Effect of Volatiles (H2O, Cl and CO2) on the Solubility and Partitioning of Platinum and Iridium in Fluid-Melt Systems.

Blumenthal, H. (MSc, 2010) A Geochemical Study of the Mineralization at the Hopper deposit, Yukon: A Case Study of an Atypical Copper Occurrence.

Jian Zhang (pdf, with Shoufa Lin, Waterloo), 2008-2010, Structural controls of the Young-Davidson gold deposit and the tectonic-metamorphic evolution of the western portion of the Larder Lake Deformation zone.

Waheed Ibraheem (visiting professor from Zagazig University, Egypt), 2009-2010, Petrogenesis of rare metal-bearing granites in the Eastern Desert of Egypt

Guo, Q., (PhD, 2008) As/Sb partitioning in high temperature granitic melt – aqueous system and remediation in low temperature Permeable Reactive Barrier system, 175 pp.

Mealin, C. (MSc, 2008) Magmatic and hydrothermal distribution of PGEs in the Bird River sill, Manitoba.

Mareieke Van Lichtervelde, (PhD, 2006, with Stefano Salvi, Toulouse, France) Métallogénie du tantale: Application au different styles de minéralisations en tantale dans la pegmatite de Tanco, Manitoba, Canada.










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