Cummings, M.L., Cady, S.L., and Perkins, R.B., 2009. A tale of two basins: Comparisons and contrasts in the high desert hydrogeology of Steens Mountain, southeastern Oregon in O’Connor, J.E., Dorsey, R.J., and Madin, I.P., eds., Volcanoes to Vineyards: Geologic Field Trips through the Dynamic Landscape of the Pacific Northwest. Geological Society of American Field Guide 15, p. 295-318.
Perkins, R.B., Piper, D.Z., Mason, C.E., 2008. Trace-element budgets in the Ohio/Sunbury Shales of Kentucky: Constraints on ocean circulation and primary productivity in the Devonian-Mississippian Appalachian Basin. Palaeogeography, Palaeoclimatology, Palaeoecology, v 265, p 14-29.
Piper, D.Z., Perkins R.B., Howe, H.D, 2007. Rare-earth elements and trace metals as evidence of paleo-redox and paleo-primary productivity for the Phosphoria Formation—A marine phosphate deposit of Permian age. Deep-Sea Research II, v 54, p 1396-1413.
Piper, D.Z., and Perkins, R.B., 2004, A modern vs. Permian black shale – the hydrography, primary productivity, and water-column chemistry of deposition, Chemical Geology, v 206, p 177-197.
Breit, G.N., Foster, A.L., Perkins, R.B., Yount, J.C., King, T., Welch, A.H., Whitney, J.W., Uddin, M. N., Muneemn A.A., and Alam, M.M., 2004, As-rich ferric oxyhydroxide enrichments in the shallow subsurface of Bangladesh in Wanty, R.B., and Seal, R.R., eds., Proceedings of the Eleventh International Symposium on Water-Rock Interaction, Saratoga Springs, New York: New York, A.A. Balkema Publishers p. 1457-1461.
Perkins, R.B. and Piper, D.Z., 2004, The Meade Peak member of the Phosphoria Formation: Temporal and spatial variations in sediment geochemistry in Hein, J.R., ed., Life cycle of the Phosphoria Formation: From Deposition to the Post-mining Environment: Handbook of Exploration Geochemistry, Elsevier, Amsterdam, p 73 - 110.
Perkins, R.B. and Foster, A.L., 2004, Mineral affinities and distribution of selenium and other trace elements in black shales and phosphorites of the Phosphoria Formation in Hein, J.R., ed., Life cycle of the Phosphoria Formation: From Deposition to the Post-mining Environment: Handbook of Exploration Geochemistry, Elsevier, Amsterdam, p 251-298.
Hein, J.R., Perkins, R.B., and McIntyre, B., 2004, Evolution of Thought Concerning the Origin of the Phosphoria Formation in Hein, J.R., ed., Life cycle of the Phosphoria Formation: From Deposition to the Post-mining Environment: Handbook of Exploration Geochemistry, Elsevier, Amsterdam, p 19 - 44.
Hein, J.R., McIntyre, B.R., Perkins, R.B., Piper, D.Z., Evans, J.G., 2004, Rex Chert Member of the Permian Phosphoria Formation: Composition, with emphasis on elements of environmental concern in Hein, J.R., ed., Life cycle of the Phosphoria Formation: From Deposition to the Post-mining Environment: Handbook of Exploration Geochemistry, Elsevier, Amsterdam, p 399 - 426.
Perkins, R.B., McIntyre, B., Hein, J.R., and Piper, D.Z., 2003, Geochemistry of Permian rocks from the margins of the Phosphoria Basin: Lakeridge core, Western Wyoming, U.S. Geological Survey Open File Report 03-21, 60 p.
Hein, J.R., McIntyre, B., Perkins, R.B., Piper, D.Z., and Evans, J., 2002, Composition of the Rex Chert and associated rocks of the Permian Phosphoria Formation: Soda Springs area, SE Idaho, U.S. Geological Survey Open File Report 02-345, 30 p.
Perkins, R.B. and Palmer, C. D , 2001, Solubility of chromate hydrocalumite (Ca3Al2O6·CaCrO4·12H2O), 5-75ºC, Cement and Concrete Research, v 31, p 983-992.
Perkins, R.B. and Palmer, C. D., 2000, Solubility of Ca6(Al[OH]6)2SO4·26H2O, the chromate analog of ettringite, 5-75ºC, Applied Geochemistry, v 15, p 1203 – 1218.
Perkins, R.B. and Palmer, C. D., 1999, Solubility of ettringite (Ca6[Al(OH)6)2(SO4)·26H2O at 5 - 75ºC, Geochimica et Cosmochimica Acta, v 63, p 1969-1980.
Perkins, R.B., Mason, C.E., and Piper, D.Z., 2009. Trace element mobility from weathering of black shales in eastern Kentucky. Geological Society of America Annual Meeting, Portland, OR.
Palmer, C.D., Mattson, E.D., Perkins, R.B., Plummer, M., Wood, T., 2009. Spatial distribution of geochemical changes about an oil shale retort. 29th Oil Shale Symposium, Golden, CO.
Perkins, R.B., Grathoff, G.H., Palmer, C.D., Mattson, E.D, 2008. Mineralogical changes in oil shale from hydrous retorting. 18th Annual Goldschmidt Conference, Vancouver, B.C., Geochimica et Cosmochimica Acta, 72, A737.
Palmer, C.D., Mattson, E.D., Perkins, R.B., 2008. Dissolved Constituents in Water from Hydrous Retort Experiments. 28th Oil Shale Symposium, Golden, CO.
Gray, Z.N., Grathoff, G.H., and Perkins, R.B., 2008. Characterization of natural and synthetic floating, mixed valent Fe-film (Schwimmeisen), American Chemical Society National Meeting, New Orleans, April 2008.
Piper, D.Z., Perkins R.B., Howe, H.D, 2006. Rare-Earth elements and trace metals as evidence of paleo-redox and paleo-primary productivity for the Phosphoria Formation - A marine phosphate deposit of Permian age, European Geosciences Union, General Assembly, Vienna, Austria.
Foster, A.L., Perkins, R.B., Marcus, M.A., Breit, G.N., Whitney, J.W., Yount, J.C., Uddin, M.N., and Muneem, A.A., 2006, Arsenic species in near-surface iron oxyhydroxide bands in Bangladesh: Microcharacterization by electron probe, XAFS spectroscopy, and X-ray diffraction. Submitted, Geological Society of America Annual Meeting, Philadelphia, PA, October 2006.
Foster, A.L., Breit, G.N., Yount, J.C., Whitney, J.W., Welch, A.H., Lamothe, P.J., Sanzalone, R.B., Perkins, R.B., Uddin, M.D., Muneem, A.A., and Alam, M.M., 2005, Spectromicroscopy and microdiffraction studies of arsenic-rich iron oxide bands in near-surface sediments of eastern Bangladesh. Presented at the 230th ACS National Meeting, in Washington, DC, Aug 28-Sept 1, 2005.
Foster, A.L., Perkins, R.B., Breit, G.N., Yount, J.C., Whitney, J.W., Welch, A.H., Lamothe, P., Sanzolone, R.J., Uddin, M.N., and Muneem, A.A., High arsenic accumulation in iron phases in near-surface sediments from eastern Bangladesh. Presented at the Geological Society of America Annual Meeting, Seattle, WA, November 2003.
Perkins, R.B. and Piper, D.Z., Trace element accumulation modeling of the primary productivity, water-column chemistry, and hydrography of deposition of the Meade Peak Member of the Phosphoria Formation. Presented at the Geological Society of America Annual Meeting, Seattle, WA, November 2003
Perkins, R.B. and Foster, A.L., Mineral affinities and distribution of selenium in black shales of the Meade Peak Member of the Phosphoria Formation. Presented at the Geological Society of America Annual Meeting, Denver, CO, October 2002.
Perkins, R.B. and Piper, D.Z., The Meade Peak Member of the Phosphoria Formation: Temporal and spatial variations in sediment geochemistry. Presented at the Geological Society of America Annual Meeting, Boston, MA, November 2001.
Piper, D.Z. and Perkins, D.Z., Seawater circulation and chemistry of the Permian Phosphoria Sea: Southeast Idaho. Presented at the Geological Society of America Annual Meeting, Boston, MA, November 2001.
Perkins, R.B. and Palmer, C.D., Chromium substitution in ettringite. Presented at the Geological Society of America Annual Meeting, Reno, NV, November 2000.
Perkins, R.B. and Palmer, C.D., Characterization and Thermodynamic Properties of Ca6[Al(OH)6)2(CrO4)3·26H2O, the Chromate Analog of the Mineral Ettringite. Presented at the American Chemical Society 54th NW Regional Meeting, Portland, Oregon, June 1999.