Alan E. Boudreau Born 26 March 1953 Married, one child

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1 CURRICULUM VITAE Alan E. Boudreau Born 26 March 1953 Married, one child Education Ph.D. (Geology) University of Washington, The role of fluids in the petrogenesis of platinum-group element deposits in the Stillwater Complex, Montana I. S. McCallum, supervisor. M.S. (Geology) University of Oregon, 1982 The formation of fine-scale igneous layering - A.R. McBirney, supervisor. B.A. (Geology) University of California, Berkeley, 1976 Employment present Professor of Geology, Duke University Associate Professor of Geology, Duke University Assistant Professor of Geology, Duke University Research Scientist, University of Washington Research/Teaching Assistant, Department of Geological Sciences, University of Washington (summers) Geologist, Anaconda Minerals Company, Stillwater Project, Nye, Montana Research/Teaching Assistant, Department of Geology, University of Oregon Geologist, Exploration Logging, USA, Sacramento, California Research Interest Origins of igneous layering: Numerical modeling of postcumulus processes such as crystal aging and compaction and how they can give rise to the variety of features observed in igneous layering. Petrogenesis of platinum-group element (PGE) deposits in layered intrusions and associated work on degassing of crystal assemblages and evidence for the mixing of volatile-rich igneous fluids with silicate liquid + crystal assemblages Funding Current NSF EAR Quantitative Modeling of Gas Migration in Layered Intrusions" 168,875 (1/05-12/06) 1

2 Past NSF EAR Quantitative modeling of infiltration in layered intrusions (renewal, $158,000, 6/02-6/04) NSF EAR "Quantitative modeling of infiltration in layered intrusions", ($166,000., 7/99 6/02, extended to 12/02) NSF EAR "Halogen geochemistry and Cl isotopes of the of the Stillwater and Bushveld Complexes" ($100,000, 7/96-6/99) NSF EAR "Compaction of Igneous Cumulates" ($130,000, 2/96 to 1/99). NSF EAR "Upgrade request for the Triangle Universities Electron Microprobe Facility" ($65,485, 9/94 to 10/96). NSF EAR "Origins of Igneous Layering" ($62,000, 1/93 to 6/95). NSF EAR "Halogen Geochemistry of the Great Dyke, Zimbabwe" ($95,000, 7/91 to 6/93). NSF EAR "Hydrothermal History of the Stillwater Complex" ($80,000, 1/89 to 4/91; co-investigator with I. S. McCallum). Duke University Research Council, "Major and Trace element variations associated with platinum mineralization in Montana ($1,7000 7/89 to 6/91). Duke University Research Council, "Composition of hydrous minerals associate with platinum mineralization, Zimbabwe" ($4,000, 7/91 to 6/92). Duke University Research Council, "Halogen Geochemistry of the Bushveld Igneous Complex, South Africa" ($1,893, 7/94 to 6/95). Duke University Research Council, "Halogen Geochemistry of the Bushveld Igneous Complex, South Africa" ($1,700, 7/95 to 6/96). NASA NAG 9-84 "The Formation of Cumulate Rocks" (~$50k/yr for 3 years written under I.S. McCallum (P.I.) for support of doctoral dissertation). Professional Activities Time Magazine: Person of the Year, Invited participant, GSA field Forum Rethiniking the emplacement of granites, Seirra Nevadas, October, 2005 Invited Keynote Session speaker, 15 th Goldschmidt Conf. (2005) Invited participant, Ferrar Dolorites (Dry Valleys, Antarctica) study team, Antarctic summer Invited participant, 5 th Bostok Conference on Layered intrusions, Maine coast, June, 2004 Invited participant, Advanced Research Workshop on Ni-Cu-PGE Deposits April 2004, Laurentian University, Sudbury, Ontario Invitated participant, 4 th Bostok Conference on Layered Intrusions, Rogaland, Norway, August, 2002 Conference and Field Trip Co-Organizer, 9 th International Platinum Symposium, Billings, Montana, 16 July to 2 August, Invited participant, AGU session Evolution of the Igneous Rocks, 2002 Invited speaker, Society Economic Geologist 2 nd Annual Workshop in Mineral Exploration PGE Exploration, October 2001, Laurentian University, Sudbury, Ontario. Invited Speaker, South African Geological Society, Bushveld Branch, Rustenburg, May,

3 Special session co-chairman on Mafic Magmas and Their Ore Deposits, Goldschmidt Conference, West Virginia, May, Invited participant, 3 rd Bostok Conference on Layered Intrusions, 7-14 August, 2000, Isle of Rum Scotland Invited keynote speaker, session on the Evolution of Magmatic Textures, GeoCanada2000 Conference 29 May 2 June 2000 Keynote speaker, 8 th International Platinum Symposium, 1998, Rustenburg, South Africa Conference Organizer, 2 nd Bostok Conference of Layered Intrusions, Sept 1-6, 1998, Nye, Montana Invited contributor, 1 st Bostok Symposium on Layered Intrusions, Sept. 1995, Museum of Natural History, New York, New York. Invited Short Course contributor and lecture: MAC Short Course on Magmas, Fluids and Ore Deposits, Vancouver, B.,C., Spring Invited Short Course contributor and lecture: MAC short course on Alteration Associated with Ore-Forming Systems, Spring Invited contributor and lecture, Mineral Exploration '94, Lake Tahoe. Invited lecture 1993 Gordon Conference. Participant, 1990 scientific expedition to Skaergaard Complex, East Greenland. Invited keynote lecture, 1990 Australian Geological Congress, Hobart, Tasmania. Invited lecture, U.S.G.S., Reston, Virginia, December Invited lecture, UNC Chapel Hill, April Invited lecture, 28th International Geological Congress, Washington, D.C., July, Invited lecture, Conference on Self-Organization in Geology, Santa Barbara, May, 1988 Invited lecture, Pacific Northwest Scanning Electron Microscopy Association, Seattle, WA, September Participant, NATO Workshop on the Origin of Igneous Layering, held in Greenland, 3-15 August, Invited lecture, International Mineralogical Association, Symposium on Layered Intrusions and Associated Ore Deposits, Stanford University, California, Invited lecture, Symposium on Layered Igneous Rocks, Ottawa, Canada, May, Invited contributor, IGCP and USGS field guide to the Stillwater Complex, Field trip leader, I.G.C.P and 4th International Platinum symposium field trips to the Stillwater Complex July-August, Honorable mention, Northwest Mining Association student poster presentation, December, Recipient, Achievement Rewards for College Scientists Foundation Fellowship, Invited lecture, NATO Conference on Chemical Instabilities, Austin, Texas, March, Invited participant, Lunar and Planetary Science Institute field trip to the Stillwater Complex, Invited student member, Mineralogical Society of America, Member, American Geophysical Union. Computer Programs Made Available to the Scientific Community at PELE A PC-hosted program to model the crystallization of silicate liquids based on the MELTS algorithm. 3

4 IRIDIUM A program to model reaction of silicate liquid infiltrating a porous solid mineral assemblage. PALLADIUM A program to model ore element migration in a crystallizing, compacting and degassing crystal pile. Bibliography Books, Book Chapters, Field trip Guides and Miscellaneous Compilations 9. Boudreau, A.E., editor (2002) Extended Abstracts, 9 th International Platinum Symposium, July 2002, Billings Montana, USA, 500 pp. Made available on-line at 8. Boudreau, A.E., 2002, The formation of the J-M reef and associated rocks by fluid fluxing in a crystal-liquid mush, in 9th International Platinum Symposium, Geology and Guide, Stillwater Complex, Montana, USA, [field trip guidebook], p. E1-E Boudreau, A.E., 2002, Compositions of pegmatoids beneath the J-M Reef, in 9th International Platinum Symposium, Geology and Guide, Stillwater Complex, Montana, USA, [field trip guidebook], p. F1-F8. 6. Boudreau, A.E., 2002, Stillwater Complex field site description - Inch-scale doublet layering, west side, Stillwater Canyon, in 9 th International Platinum Symposium, Geology and Guide, Stillwater Complex, Montana, USA, [field trip guidebook], p. G1-G6. 5. Boudreau, A.E. (1995) Fluid evolution in layered intrusions: Evidence from the chemistry of the halogen-bearing minerals. In Magmas, Fluids and Ore Deposits, Geological Society of Canada Short Course Series, (J.F.H. Thompson, ed.), v. 23, pp Boudreau, A.E., and Muerer, W.P. (1994) "Supersolidus" alteration associated with platinumgroup element deposits in layered intrusions. In Alteration and Alteration Processes Associated with Ore-Forming Systems, Geological Association of Canada Short Course (C. Jowettt and D. Lentz, eds.), v. 11, pp Boudreau, A.E. (1987). Pattern formation during crystallization and the formation of finescale layering. In Origins of Igneous Layering (I. Parsons, ed). D. Reidel, Boston, p Boudreau, A.E., and McCallum, I.S. (1985). Features of the Picket Pin Pt-Pd deposit. In Stillwater Complex, Montana: Geology and Guide (Czamanski, J, and Zientek, M., eds.), Montana Bureau of Mines and Geology, Special Pub. 92, pp Boudreau, A.E. (1983). Examples of patterns in igneous rocks. In Chemical Instabilities: Applications in Chemistry, Engineering, Geology and Materials Science (G. Nicolis and F. Beras, eds.), p D. Reidel, Boston. Bibliography Refereed Papers 49. C. Lundstrom, C.Huang, F. Boudreau, A., and Li, J (2007) Igneous differentiation by temperature gradient driven diffusion through supercritical H 2 O. Science (in review) 48. Boudreau, A.E. (2007) Modeling mass transport in the Merensky Reef, Bushveld Complex, South Africa. Contributions to Mineralogy and Petrology (in review) 47. Chutas, N.I. and Boudreau, A.E. (2007) Pb and Sr isotopic disequilibrium between orthopyroxene and plagioclase in the Critical Zone, Bushveld Complex, S. Africa. (In prep.) 4

5 46. Boudreau, A.E., and Simon, A. (2007) Halogen variations and degassing in the Basement Ferrar sill, Antarctica. J. Petrol. 48: Williams, E., Boudreau, A.E., Boorman, S. and Kruger, F.J. (2006) Textures of the Lower Zone orthopyroxenites from the Burgersfort Bulge of the Eastern Bushveld Complex, Republic of South Africa. Contributions To Mineralogy and Petrology 151: Lindstrum, C.C., Boudreau, A.E., and Pertermann, M. (2005) Diffusion-reaction in a thermal gradient: Implications for the genesis of anorthitic plagioclase, high alumina basalt and igneous mineral layering. Earth Planet. Sci. Lett. 237: Boudreau, A.E. and Hoatson, D.M. (2004) Halogen Variations in the Paleoproterozoic Layered Mafic-Ultramafic Intrusions of the East Kimberly, Western Australia: Implications for Platinum-Group Element Mineralization. Economic Geology 99: Boorman, S., Boudreau, A.E., and Kruger, F.J., (2004). The Lower zone - Critical Zone transition of the Bushveld Complex: A quantitative textural study. Journal of Petrology 45: Boudreau, A. (2004) PALLADIUM A program to model the chromatographic separation of the platinum-group elements, base metals and sulfur in a solidifying igneous crystal pile. Canadian Mineralogist 42: Boorman, S. L., McGuire, J.B., Boudreau, A.E., and Kruger, F.J. (2003). Fluid overpressure in layered intrusions, Part II: Formation of a breccia pipe in the eastern Bushveld Complex, Republic of South Africa. Mineralium Deposita 38: Boudreau, A.E. (2003). IRIDIUM A program to model reaction of silicate liquid infiltrating a porous solid assemblage. Computers and Geosciences 29: Boudreau, A.E., and Philpotts, A.J. (2002). Quantitative modeling of compaction in the Holyoke flood basalt flow, Hartford Basin, Connecticut. Contributions to Mineralogy and Petrology 144: Willmore, CC., Boudreau, A. E., Spivack, A., and Kruger, F.J. (2002). Halogens of the Bushveld Complex, South Africa: δ37cl and Cl/F evidence for hydration melting of the source region in a back-arc setting. Chemical Geology 182: Willmore, C.C., Boudreau A.E., and Kruger, F.J. (2000). The halogen geochemistry of the Bushveld Complex, Republic of South Africa: Implications for chalcophile element distribution in the Lower and Critical zones. Journal of Petrology, v. 41, pp Boudreau, A.E., and Meurer, W.P. (1999) Chromatographic separation of the platinum-group elements, gold, base metals and sulfur during degassing of a compacting and solidifying crystal pile. Contributions to Mineralogy and Petrology v. 134, pp Boudreau, A.E. (1999) Fluid fluxing of cumulates: The J-M reef and associated rocks of the Stillwater Complex, Montana. Journal of Petrology v. 40, pp Boudreau, A.E., (1999) PELE - A version of the MELTS software program for the PC platform. Computers and Geosciences, v. 25, pp Meurer, W. P., Willmore, C.C., and Boudreau, A. E. (1998) Metal redistribution during fluid exsolution and migration in the Middle Banded series of the Stillwater complex, Montana. Lithos v. 47, pp Meurer, W.P., and Boudreau, A.E., (1998). Compaction of igneous cumulates. Part I - Geochemical consequences for cumulates and liquid fractionation trends. Journal of Geology v. 106, pp

6 30. Meurer, W.P., and Boudreau, A.E. (1998). Compaction of igneous cumulates. Part II Compaction and the development of igneous foliation. Journal of Geology v. 106, pp Boudreau, A.E., Stewart, M.A., and Spivack, A. (1997). Stable Cl isotopes and origin of high Cl/F magmas of the Stillwater Complex, Montana. Geology v. 25, pp Meurer, W.P., Klaber, S.A., and Boudreau, A.E. (1997) Discordant bodies from Olivine- Bearing zones III and IV of the Stillwater complex, Montana -Evidence for post-cumulus fluid migration in layered intrusions. Contributions to Mineralogy and Petrology v. 130, pp Boudreau, A.E. and McBirney, A.R. (1997) The Skaergaard Layered Series. Part. III. In Situ Layering. Journal of Petrology v. 38, pp Meurer, W.P., and Boudreau, A.E. (1996) The petrology and mineral compositions of the Middle Banded series of the Stillwater Complex, Montana. Journal of Petrology, v. 37, pp Waters, C., and Boudreau, A.E. (1996) A reevaluation of crystal size distributions in chromite cumulates. American Mineralogist, v. 81. p Meurer, W.P., and Boudreau, A.E. (1996) Evaluation of models for halogen variations in apatite from layered intrusions using a detailed study of apatite from OB-III and OB-IV of the Middle Banded series, Stillwater Complex, Montana. Contributions to Mineralogy and Petrology v. 123, pp Meurer, W.P., and Boudreau A.E. (1996). Compaction of density stratified cumulates: effect on trapped liquid distributions. Journal of Geology v. 104, pp Boudreau, A.E. (1995). Formation of chlor- and fluor-apatite in layered intrusions: A comment. Mineralogical Magazine v. 59, pp Boudreau, A.E. (1995) Some geochemical considerations for platinum-group element exploration in layered intrusions. Exploration and Mining Geology, v. 3, pp Boudreau, A.E., Love, C., and Prendergast, M.D. (1995). Halogen geochemistry of the Great Dyke, Zimbabwe. Contributions to Mineralogy and Petrology v. 122, pp Boudreau, A.E. (1995) Crystal aging and the formation of fine-scale layering. Mineralogy and Petrology v. 54, pp Boudreau, A.E. (1994) Crystal aging in two component, two crystal systems. South African Journal of Geology v. 97, pp Braun, K., Meurer, W., Boudreau, A.E., and McCallum, I.S. (1994) Geochemistry of pegmatoids beneath the J-M Reef, Stillwater Complex, Montana. Chemical Geology v. 113, pp Boudreau, A.E. (1993) Chlorine as an exploration guide to the PGE in layered intrusions. Journal of Geochemical Exploration v. 48, pp Boudreau, A.E., Love, C., and Hoatson, D. (1992) Halogen geochemistry of the Munni Munni Complex and associated intrusions of the Pilbara Block, W. Australia. Geochimica Cosmochimica Acta v. 57, pp Boudreau, A.E. (1992) Volatile fluid overpressure in layered intrusions and the formation of potholes. Australian Journal of Earth Sciences v. 39, pp Boudreau, A.E. (1992) Infiltration metasomatism in layered intrusions - An example from the Stillwater Complex, Montana. Journal of Volcanology and Geothermal Research v. 52, pp

7 12. Boudreau, A.E. and McCallum, I.S. (1992) Concentration of Platinum-group elements by magmatic fluids in layered intrusions. Economic Geology v. 87, pp Boudreau, A.E. and Kroger, F.J. (1990) Variation in the composition of apatite through the Merensky cyclic unit in the western Bushveld Complex. Economic Geology v. 85, pp Boudreau, A.E., and McCallum, I.S. (1990). Low temperature alteration of REE-rich chlorapatite from the Stillwater Complex, Montana. American Mineralogist v. 75, pp Boudreau, A.E., and McCallum, I.S. (1989) Investigations of the Stillwater Complex: Part V. Apatites as indicators of evolving fluid composition. Contributions to Mineralogy and Petrology v. 102, pp Mathez, E.A., Dietrich V.J., Holloway, J.R., and Boudreau, A.E. (1989) Carbon distribution in the Stillwater Complex and evolution of vapor during crystallization of Stillwater and Bushveld Magmas. Journal of Petrology v. 30, pp McBirney, A.R., White, C.M., and Boudreau, A.E. (1990) Spontaneous development of concentric layering in a solidified siliceous dike, East Greenland. Earth Science Reviews v. 29, pp Boudreau, A.E. (1988). Investigations of the Stillwater Complex: Part IV. The role of volatiles in the petrogenesis of the J-M Reef, Minneapolis adit section. Canadian Mineralogist v. 26, pp Boudreau, A.E., and McCallum I.S. (1986). Investigations of the Stillwater Complex, Part III. The Picket Pin Pt/Pd deposit. Economic Geology v. 81, pp Boudreau, A.E., Mathez, E.A., and McCallum, I.S. (1986). Halogen geochemistry of the Stillwater and Bushveld Complexes: Evidence for transport of the platinum-group elements by Cl-rich Fluids. Journal of Petrology v. 27, pp Bow, C. Wolfgram, D., Turner, A., Barnes, S., Evans, J., Zdepski, M., and Boudreau, A. (1982). Investigations of the Howland Reef of the Stillwater Complex, Minneapolis Adit area; Stratigraphy, structure, and mineralization. Economic Geology v. 77, pp Longhi, J., and Boudreau, A.E., (1979). Complex igneous processes and the formation of the primitive lunar crustal rocks. Proceedings of the 10th Lunar Planetary Science Conference, pp Longhi, J., and Boudreau, A.E. (1979). The orthoenstatite liquidus field in the system forsterite-diopside-silica at one atmosphere. American Mineralogist v. 65, pp Bibliography - Abstracts Chutas, N.I. and Boudreau, A.E. (2006) Pb and Sr isotopic disequilibrium between orthopyroxene and plagioclase in the Critical Zone, Bushveld Complex, S. Africa. GSA Annual Meeting Fall 2006, Abstracts with Programs, 38, p 371. Boudreau, A.E., and Simon, A., (2005) Crystallization and Degassing in the Ferrar Sills, Antartica AGU Annual meeting Fall 2005 Boudreau, A.E. (2005) On the hydrothermal origin of platinum-group element deposits in layered intrusions. 15 th Goldschmidt Conf. Abstr, p. A331. Boudreau, A.E. (2005) Modeling C-O-H-S fluids and sulfides in igneous systems. 15 th Goldschmidt Conf. Abst., pa853 7

8 Lundstrum, C.C., Boudreau, A.E., and Pertermann, M., Diffusion-reaction between basaltic andesite and gabbro at 0.5 GPa: an explanation for anorthitic plagioclase? Eos., Trans. AGU, 85(47), Fall meeting Suppl., Abtstract #V23D-08. Boudreau, A.E., (2004) Quantitative modeling of degassing in layered intrusions. 5th Bostok Conference on Layered Intrusions, Maine. Boudreau, A.E., (2004) Fluid fluxing in layered intrusions and the formation of chromitite layers, Eos Trans. AGU 85(17) Joint Assembly Suppl., Abstract V54B-02. Boorman, S., and Boudreau, A. (2003). Compaction in the Bushveld Complex. Eos. Trans. AGU, 84(46) Fall Meet. Supple., Abstract V12A Boudreau, A. (2003) Vapor separation and migration in a solidifying and compacting crystal pile. Eos. Trans. AGU, 83(47) Fall Meet. Suppl., Abstract V51D Boudreau, A. (2002) Quantitative modeling of melt infiltration in porous rock, Eos. Trans. AGU, 83(47) Fall Meet. Suppl., Abstract V12D-08. Boudreau, A.E. (2002) Compaction in Igneous Intrusions: Modeling Compaction in the Holyoke Flood Basalt Flow and Textural Evidence for Compaction in the Bushveld Complex (4 th Bostok Conference Norway). Boudreau, A.E. (2002) the Stillwater and Bushveld magmas were wet! Extended Abstracts, 9 th International Platinum Symposium, July, 2002 Billings, Montana, USA, pp Boorman, S, and Boudreau, A.E. (2002) Compaction in the Bushveld Complex and the nature of the Lower Zone-Critical Zone transition. Extended Abstracts, 9 th International Platinum Symposium, July, 2002 Billings, Montana, USA, pp Boorman, S., and Boudreau, A. E. (2001). Textural evidence for compaction in the Lower zone of the Bushveld Complex, South Africa EOS Trans. AGU, 82(47), Fall Meeting suppl., Abstract V32E Boudreau, A.E. (2001). Volatiles, magmas and PGE deposits. Abstracts of the 2 nd short course on PGE deposits, Laurentian University, Sudbury, Ontario, October Boudreau, A. E. (2000). Quantitative modeling of infiltration-reaction in igneous rocks Consequences for in situ crystallization. EOS (Fall AGU) Ingram, S., McGuire, J., and Boudreau, A.E. (2000) Petrogenesis of a breccia pipe, Bushveld Complex, South Africa. EOS (Fall AGU) Boudreau A.E. (2000). Quantitative Modeling of Infiltration-Reaction in Igneous Rocks Consequences for In Situ Crystallization. 3rd Bostok Conference, Rum Scotland. Boudreau, A. E. (2000). A Review of Texture and Layer Evolution in Igneous Intrusions. GeoCanada2000 CD ROM abstracts. Boudreau A. E. (2000) Quantitative Modeling of Infiltration-Reaction in Igneous Rocks. EOS (Fall AGU) Ingram S.L., McGuire, J.B. and Boudreau A.E. (2000). Fluid overpressure in Layered Intrusions and the formation of a breccia pipe in the eastern Bushveld Complex, South Africa. EOS (Fall AGU) Boudreau A.E., Willmore, C.C., and Spivack, A. (1999) The Halogen Geochemistry and Stable Cl Isotopic Ratios of the Bushveld Complex, Republic of South Africa. EOS 80, p. F1199. Boudreau, A.E. (1998) Chromatographic separation of the PGE and base metals during degassing of a compacting, solidifying crystal pile. 8th International Platinum 8

9 Symposium Abstracts, South African Inst. Mining and Metallurgy, Johannesburg, pp Boudreau, A.E. (1998) A "Hydromagmatic" model for the J-M reef, Stillwater complex. 8 th international Platinum Symposium Abstracts, Abstracts, South African Inst. Mining and Metallurgy, Johannesburg, pp Boudreau, A.E., and Meurer, W.P., (1997) Chromatographic separation of the PGE and base metals during degassing of a compacting, solidifying crystal pile. EOS v. 78 (suppl.), p. F801. Meurer, W.P., and Boudreau, A.E. (1997) base metal mobilization and concentration in OB-III and -IV of the Stillwater Complex, Montana. EOS v. 78 (suppl.) p. F801. Stewart, M., Boudreau, A.E., and Spivack, A. (1996) Cl Isotopes of the Stillwater Complex, Montana, and the Formation of High-Cl Bushveld and Stillwater Parent Liquids During Mantle Metasomatism by Cl-Rich Fluids. EOS. Meurer, W.P., and Boudreau, A.E. (1996) Evidence of dynamic fractionation and open system behavior in the cumulus pile of the Stillwater complex, Montana (submitted) Meurer, W.P., and Boudreau, A.E. (1996) Quantitative perofabric analysis of variably foliated cumulates from the Stillwater Complex, Montana. Geological Society of America Abstracts with Programs, v. 28, p? Meurer, W.P., and Boudreau, A.E. (1995) Modeling of compaction in density-stratified cumulates. EOS, v.76 (suppl.), p. F679. Waters, C. and Boudreau, A.E. (1995) A reevaluation of crystal size distributions in chromite cumulates. EOS v. 76 suppl., p. S293 Meurer, W.P., and Boudreau, A.E. (1995) F-Cl-OH evolution in apatite of the Middle Banded Series of the Stillwater Complex, Montana. EOS v. 76 suppl., p. S298. Boudreau, A.E., (1994) Exploration for the Platinum-group elements in layered intrusions. Mineral Exploration '94, Lake Tahoe, Nevada. Boudreau, A.E. (1993) Pattern formation during crystallization in two crystal, two component systems. Symposium on Layered Igneous Complexes, Johannesburg, South Africa. Boudreau, A.E. (1993) Halogens in layered intrusions. Gordon conference of Fluid-Rock interactions, Tilton, New Hampshire. Boudreau, A.E., Meurer, W.P., Cawthorn, R.G, and Mathison, C.I. (1993) Halogens in layered intrusions. Geological Society of America Annual Conference, Boston, Massachusetts, October Abstracts with Programs, v. 25, p. A372. Boudreau, A.E. (1993) Pattern formation during crystallization in two crystal, two component systems. AGU Spring Meeting Program and Abstracts, EOS suppl., p Meurer, W.P., and Boudreau, A.E. (1993) The Olivine-bearing zones of the Middle Banded series of the Stillwater Complex, Montana: Geochemistry and Textures. AGU Spring Meeting Program and Abstracts, EOS suppl., p. 337 Boudreau, A.E. (1991) Fluid overpressure in layered intrusions and the formation of potholes. Workshop on medium and small-scale structures in mafic and ultramafic rocks, U. Natal, Pietermaritzburg. Boudreau, A.E. (1991) Crystal aging as a mechanism to enhance features of igneous layering. Workshop on medium and small-scale structures in mafic and ultramafic rocks, U. Natal, Pietermaritzburg. Boudreau, A.E. (1991) Fluid overpressure and the formation of igneous potholes. Sixth Int. 9

10 Platinum Symposium, Perth, Australia. Boudreau, A.E. (1991) Gas overpressure in layered intrusions and the formation of potholes. AGU Spring Meeting Program and Abstracts, EOS suppl., p Love, C., Boudreau, A.E., and Prendergast, M. (1991) Halogen Geochemistry of the Great Dyke, Zimbabwe; some preliminary results. AGU Spring Meeting Program and Abstracts, EOS suppl. p Boudreau, A.E. (1990) A review of the evidence for the high temperature hydrothermal concentration of the platinum-group elements in layered intrusions Australian Geological Congress (extended abstract, invited). Boudreau, A.E. (1990) The chlorine connection and a hydromagmatic model for the concentration of the platinum-group elements in the Stillwater Complex, Montana Australian Geological Congress (extended abstract, invited). Boudreau, A.E., and McCallum, I.S. (1989) The redistribution of minor and trace elements during the degassing of large layered intrusions. 28th Int. Geological Congess, Washington, D.C. (extended abstract, invited) Boudreau, A.E., and McCallum, I.S. (1988) Degassing of large layered intrusions: A model for the apatite compositional trends in the Stillwater Complex, Montana. EOS 69(44):1469. Boudreau, A.E., and McCallum, I.S. (1988) F and Cl distribution in apatites of the Stillwater Complex. Lunar and Planet. Sci. XIX. (extended abstract) Mathez, E.A., Dietrich, V.J., Holloway, J.R., and Boudreau, A.E. (1988) Chemical evolution of vapor during crystallization of the Stillwater Complex. In Geo-Platinum 87 (H.M. Prichard et al., eds), Elsevier, New York, pp Boudreau, A.E., and McCallum, I.S. (1987). Numerical Model of fine-scale igneous layering. Lunar Planet. Sci XVIII, p (extended abstract) Boudreau, A.E., and McCallum, I.S. (1987). Halogens in apatite from the Stillwater Complex: preliminary results. EOS 68(44):1518. Boudreau, A.E., and McCallum, I.S. (1986). The role of Cl-rich fluids in the Stillwater Complex. Invited lecture, Symposium on Layered Igneous Rocks, Ottawa, Canada. Boudreau, A.E., and McCallum, I.S. (1986). Hydrothermal transport of the PGE, an alternative model for the formation of stratabound PGE deposits in layered intrusions. Invited lecture, IMA Symposium on Layered Intrusions and Associated Ore Deposits. Boudreau, A.E., and McCallum, I S., (1985). The Picket Pin Pt-Pd deposit, Stillwater Complex, Montana. Can. Mineral. 23: 295. Boudreau, A.E., and McCallum, I.S. (1985). Evidence for mineral reactions and metasomatism by silica-undersaturated Cl-rich fluids in the main Pt-Pd zone, Stillwater Complex, Montana. Can. Mineral. 23: 296. Boudreau, A.E., and McCallum, I.S. (1985) Hydrothermal fluids in the genesis of PGE deposits in layered intrusions. EOS, 66: Mathez, E.A., Boudreau, A.E., and McCallum, I.S. (1985). Apatite and biotite from the Stillwater and Bushveld Complexes and the nature of hydrothermal activity. Can. Mineral. 23: 308. Mathez, E.A., Boudreau, A.E., and McCallum, I.S. (1985). Carbon and chlorine in fluids associated with the platinum-bearing rocks of the Stillwater and Bushveld Complexes. EOS, 66: Boudreau, A.E., and McCallum, I.S. (1984). The Picket Pin Pt/Pd zone, Stillwater Complex, 10

11 Montana. Abstr. Lunar Planet. Sci. Conf. 15th, Lunar and Planetary Inst., Houston, p (extended abstract) Boudreau, A.E. (1983). Examples of pattern development during crystallization of igneous rocks. NATO Workshop on Chemical Instabilities, Invited Lecture, Austin, Texas. Boudreau, A.E. (1982). Fine-scale layering in the Stillwater Complex, Montana. Geol. Soc. Am. Abstr. with Program, v. 14, no. 7, p Boudreau, A.E. (1982). The main platinum zone, Stillwater Complex, MT - Evidence for bimetasomatism and a secondary origin for olivine. In Workshop on Magmatic Processes of Early Planetary Crusts: Magma Oceans and Stratiform Layered Intrusions (D. Walker and I.S. McCallum, eds.), p LPI Tech. Rpt Lunar and Planetary Institute, Houston. (extended abstract) Boudreau, A.E. (1982). Fine-scale rhythmic layering in the Stillwater Complex, MT. In Workshop on Magmatic Processes of Early Planetary Crusts: Magma Oceans and Stratiform Layered Intrusions (D. Walker and I.S. McCallum, eds.), p LPI Tech. Rpt Lunar and Planetary Institute, Houston. (extended abstract) Bow, C., Wolfgram, D., Boudreau, A.E., Barnes, S., and Obolweicez, (1980). Some thoughts on the controls on crystallization of layered igneous rocks of the Stillwater Complex, Montana, USA. Geol. Soc. Am. Abstracts with Program, 12(7):