Ray Lett, Ph.D., P.Geo.

Emeritus Scientist

Education

The University of London, UK (B.Sc., 1968)

The University of Leicester, UK (M.Sc., 1970)

The University of British Columbia (Ph.D., 1979)

Expertise

Before retiring from the BC Geological Survey in 2010 Ray was responsible for the delivery of geochemical analytical  and assay services to the Survey, maintaining drainage, till and rock geochemistry databases and conducting applied geochemical research to support of the BC mining and mineral exploration  industries. Ray worked for Barringer Research, BP Minerals, Fox Geological Consultants and Amax Exploration as an exploration geologist/geochemist before he joined the Survey in 1990.  He now continues to carry out research into different aspects of surficial sediment, soil, ground and surface water geochemistry and publishes the results of his studies in technical reports and journals. Ray is a sessional instructor and Visiting Scientist at the School of Earth and Ocean Sciences, University of Victory and a BC registered professional geoscientist (P.Geo).

Publications

 

Lett, R.E., and Paulen, R.C., 2021. Soil and till geochemical surveys at the Ace mineral property, central British Columbia. In: Geological Fieldwork 2020, British Columbia Ministry of Energy, Mines and Low Carbon Innovation, British Columbia Geological Survey Paper 2021-01, pp. 145-165.

Lett, R. E., and Paulen, R.C., 2021. A compilation of soil and till geochemical data from surveys at the Ace and Getty South mineral properties, British Columbia. British Columbia Ministry of Energy, Mines and Low Carbon Innovation, GeoFile 2021-11, 9 p.

 

Rukhlov, A.S., Fortin, G., Kaplenkov, G.N., Lett, R.E., Lai, V. W.-M., and Weis, D., 2020. Multi-media geochemical and Pb isotopic evaluation of modern drainages on Vancouver Island. In: Geological Fieldwork 2019, British Columbia Ministry of Energy, Mines and Petroleum Resources, British Columbia Geological Survey Paper 2020-01, pp. 133-167.

 

Rukhlov, A.S., Fortin, G., Kaplenkov, G.N., Lett, R.E., Lai, V. W.-M., and Weis, D., 2019. Supplementary data for multi-media geochemical and Pb isotopic evaluation of modern drainages on Vancouver Island. British Columbia Ministry of Energy, Mines and Petroleum Resources, British Columbia Geological Survey GeoFile 2019-14, 1 p. 

 

Lett, R.E., 2018. Compilation of geochemical data between Lillooet and French Bar Creek, south-central British Columbia. British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Geofile 2018-4, 47 p.

Lett, R.E., 2018. Regional moss-mat-sediment survey in the Porcher Island, Grenville Channel, and Dundas Island area, central British Columbia coast. British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Geofile 2018-3, 37 p.      

Lett, R.E. and Rukhlov, A., 2018. A review of methods for regional geochemical surveys (RGS) in the Canadian Cordilleran. In: Ferbey, T., Plouffe, A., and Hickin, A.S. (Eds.) Indicator Minerals in Till and Stream Sediments of the Canadian Cordillera. Geological Association of Canada, Special Paper 50, and Mineralogical Association of Canada Topics in Mineral Sciences 47,

Sacco, D., Lett, R., Jackaman, W., and Elder, B., 2018. Advanced processing of the TREK Project geochemical data: Identifying and Enhancing geochemical anomalies in the TREK project area using sediment transport modelling combined with multimedia and multivariate data analysis, Geoscience BC Report, 2018-7, 99 p.

 

Yehia, R., Heberlein, D.R. and Lett, R.E., 2017. Rapid, Field-Based Hydrogeochemical-Survey Analysis and Assessment of Seasonal Variation Using a Field-Portable Photometer and voltammeter, Marmot Lake NTS Area, South-Central British Columbia (NTS 093B/13). Geoscience BC Report, 2017-13, 126 p.

 

Lett, R.E. and Jackaman, W., 2015. Tracing the Source of Anomalous Geochemical Patterns in Soil, Water and Seepage Gas near the Nazko Volcanic Cone, BC (NTS 93B/13). Geoscience BC, Report 2015-16, 75 p.

Lett, R.E. and Jackaman, W., 2015. Tracing the source of anomalous geochemical patterns in carbonate-rich bog soils near the Nazko volcanic cone, central British Columbia. Geosciences BC, Summary of Activities, 2014, Geoscience BC, Report 2015-1, pp 13 - 20.

 

Lett, R.E. and Jackaman, W., 2014. Geochemical Expression in Soil and Water of Carbon Dioxide Seepages near the Nazko Volcanic Cone, Interior Plateau, central BC (NTS 093B/13). Geoscience BC, Report 2014-11. 88 p.

Lett, R.E. and Jackaman, W., 2014. Geochemical expression in soil and water of carbon dioxide seepages near the Nazko volcanic cone, central British Columbia. Geoscience BC, Summary of Activities, 2013, Geoscience BC, Report 2014-1, pp 35 - 42.

 

Lett, R.E. and Paterson, K., 2011. A Comparison of Several Commercially Available Methods for the Geochemical Analysis of Rare Earth, Rare Metal and High Field Strength Elements in Geological Samples. In: Geological Fieldwork 2010, British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Paper 2011-1, pp 181-188.

 

Lett, R.E. and Jackaman, W., 2010. Preliminary review of the effect of analytical method variability on regional geochemical survey data. In: Geological Fieldwork 2009, British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Paper 2010-1, pp 174-179.

 

Lett, R.E. and Doyle, J., 2009. Geochemical projects of the British Columbia Geological Survey. In: Geological Fieldwork 2008, British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Paper 2009-1, pp 219-230.

Paterson, K., Lett, R.E. and Telmer, K., 2009. Lithogeochemistry of the Spanish Mount gold deposit, east –central British Columbia. In: Geological Fieldwork 2008, British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Paper 2009-1, pp 163-169.

 

Lett, R.E. and Sandwith, Z., 2008. Geochemical orientation surveys in the Quesnel Terrane between Quesnel and William Lake, central British Columbia. In: Geological Fieldwork 2007, British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Paper 2008-1, pp 49-60.

Lett, R.E., Man, E.C. and Mihalynuk, M., 2008. Towards a drainage geochemical atlas for British Columbia. In: Geological Fieldwork 2008, British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Paper 2008-1, pp 61-68.

Lett, R.E., Man, E.C., Mihalynuk, M. and Grant, D.B., 2008. A drainage geochemical atlas for British Columbia; British Columbia Ministry of Energy and Mines, Geofile 2008-1, 10 p.

Lett, R.E., Logan, J. and Sandwith, Z., 2008. A multimedia geochemical orientation survey over the JEN claims (Murray Property), Blackwater River, area, BC. British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Geofile 2008-7, 11 p.

Lett, R.E., 2008. British Columbia till geochemical survey data compilation. British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Geofile 2008-13, 13 p.

Lett, R.E., 2008. A multimedia analysis of stream geochemistry on Vancouver Island. British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Geofile 2008-8, 53 p.

 

Lett, R.E., and Bluemel, B., 2007. Multimedia geochemical surveys in the Lillooet Map Sheets, Central BC. In: Geological Fieldwork 2006, British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Paper 2007-1, pp77-86.

Lett, R.E., and Bluemel, B., 2007. Nuggets buried in the BC Geochemical Survey database. British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Geofile 2007-9, 3 p.

Lett, R.E., Ferbey, T., Roberts, M, and Bluemel, B., 2007. Orientation geochemical survey over the Jake gold prospect, Clearwater, South-Central BC. In: Geological Fieldwork 2006, British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Paper 2007-1, pp 87-92.

Lett, R.E., 2007. Workshop Notes: Drainage geochemical surveys – Stream sediments, Lake sediments, Moss Mats, Heavy minerals. British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Geofile 2007-6, 58 p.

 

Lett, R.E., and Friske, P.W.B., 2006. Bowser basin geochemical survey, North-Central BC: Anomaly follow-up in 2005. In: Geological Fieldwork 2005, British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Paper 2006-1, pp 53-62.

Lett, R.E., 2006. Geochemical surveys in the Lillooet area, Southwestern BC. In: Geological Fieldwork 2005, British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Paper 2006-1, pp 63-72.

Lett, R.E.W., Cook, S.J. and Levson, V., 2006.Till geochemistry of the Chilanko Forks, Chezacut River, Toil Mountain area, British Columbia. British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Geofile 2006-1, 12 p.

Lett, R.E., and Bluemel, B., 2006. Re-analysis of regional stream sediment samples from the McLeod Lake area, (NRTS Map Sheet 093J). British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Geofile 2006-9, 13 p.

Lett, R.E., and Bluemel, B., 2006. Compilation of regional stream sediment samples from the Bella Coola area, (NRTS Map Sheet 093D, 093C, 093E). British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Geofile 2006-10, 3 p.

 

Lett, R.E., Friske, P.W.B. and Jackaman, W., 2005. National Geochemical Reconnaissance Surveys in Northwestern BC. In: Geological Fieldwork 2004, British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Paper 2005-1, p 61-66.

Lett, R.E., and Ronning, C., 2005. BC rock geochemical database; British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Geofile 2005-14, 4 p.

Lett, R.E., 2005. Regional geochemical survey database on CD; British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Geofile 2005-17.

Lett, R.E., 2005. Re-analysis of Toodogoone River (NTS94E) and McConnell Creek (NTS 94D) regional stream sediment samples. British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Geofile 2005-22, 4 p.

 

Lett, R.E., and Jackaman, W., 2004. Iskut River-Telegraph Creek: New exploration opportunities in the BC regional geochemical survey database. In: Geological Fieldwork 2003, British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Paper 2004-1, pp 199-208.

Lett, R.E., and Jackaman, W., 2004. Regional geochemical survey guide; British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Geofile 2004-7. 14 p.

 

Lett, R.E., and Friske, P.W. B., 2003. National Geochemical Reconnaissance Surveys in the BC. Cordillera identify new Mineral exploration Targets. In: Geological Fieldwork 2002, British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Paper 2003-1, p 153-164.

Lett, R.E., 2003. Archive RGS samples re-analysis for the Queen Charlotte Islands. British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Geofile 2003-19, 29 p.

Lett, R.E., 2003. Archive RGS samples re-analysis for the Iskut region. British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Geofile 2003-20, 14 p.

 

Lett, R.E., and Jackaman, W., 2002. Stream sediment geochemistry for platinum group elements in BC. In: Geological Fieldwork 2001, British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Paper 2002-1, pp 365-375.

Lett, R.E., Levson, V. and Dunn, C., 2002. A Provisional Geochemical Exploration Model (GEM) for the Sappho Property, BC (82E/02). In: Geological Fieldwork 2001, British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Paper 2002-1, pp 389-396.

Lett, R.E., and Bradshaw, P., 2002. Atlas of Landscape Geochemical Models for Porphyry Copper, VMSD and Gold deposits in the Cordillera from Alaska to Nevada Association of Exploration Geochemists Newsletter, Explore, Number 118, pp 20-23.

 

Lett, R.E., Jackaman, W., 2001. Geochemical Exploration Models, Volume 2:Shale hosted Pb-Zn-Ag Deposits in North-Eastern British Columbia (NTS 94F/13, 94K/4 and 94L/1). British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Open File 2001-07, 70p.

Lett, R.E., 2001. Geochemical signatures around massive sulphide deposits in southern British Columbia, Canada, in. Drift Exploration in Glaciated Terrain: Eds. McClenaghan, B., Bobrowsky, P.T., Hall, G.E.M and Cook, S.J. Geological Society of London Special Publication No. 185, pp 301-322.

 

Lett, R.E., and Jackaman, W., 2000. Geochemical exploration techniques for pluton-related gold deposits in British Columbia (82M/4,5 and 6, 92P8, 82F/7). In: Geological Fieldwork 1999, British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Paper 2000-1, pp 225-236.

Lett, R.E., Jackaman, W. and Englund. L., 2000. Stream sediment exploration for pluton-related quartz-vein gold deposits in British Columbia (82M/4,5 and 6, 92P8, 82F/7). British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Open File 2000-23, 40 p .

Lett, R.E., and Jackaman, W., 2000. Geochemical Exploration Models, Volume 1:VMS Deposits in South-Central British Columbia (NTS 82L/13, L14, M/4,5 and 6, 92, 92P1). British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Open File 2000-31, 32p.

Lett, R.E., and Smyth, R., 2000. Report on platinum, palladium and gold assays from the Bull River copper-silver-gold prospect, south-eastern British Columbia. British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Geofile 2000-6, 6 p.

 

Lett, R.E., Jackaman, W. and Yeow, A., 1999. Detailed geochemical exploration techniques for base and precious metals in the Southern Kootenay Terrane (82L/13, 82L/14, 82M/4, 82M/5, 92P/1). In: Geological Fieldwork 1998, British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Paper 1999-1, pp 297-306.

Paulen, R., Bobrowsky, P.T., Lett, R.E.W, Bichler, A. J. and Wingerter, C., 1999. Till Geochemistry in the Kootenay, Slide Mountain and Quesnel Terranes. In: Geological Fieldwork 1998, British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Paper 1999-1, pp 307-319.

 

Bobrowsky, P.T., Paulen, R., Little, E., Prebble, A., Ledwon, A. and Lett, R., 1998. Till Geochemistry of the Louis Creek - Chu Chua Creek area (NTS 92P/1E and 92P/8E). British Columbia Ministry of Energy and Mines, British Columbia Geological Survey Open File 1998-6.

Lett, R.E., Sibbick, S.J.N. and Runnels, J.L., 1998. Regional stream water geochemistry of the Adams Lake-North Barriere Lakes area, British Columbia (82M/4 and 5). British Columbia Ministry of Employment and Investment, British Columbia Geological Survey Open File 1998-9, p 35.

Lett, R.E., Bobrowsky, P. Cathro, M. and Yeow, A., 1998. Geochemical Pathfinders for Massive Sulphide Deposits in the Southern Kootenay Terrane. In: Geological Fieldwork 1995, British Columbia Ministry of Employment and Investment, British Columbia Geological Survey Paper 1998-1, pp 15-1 - 15-9.

 

Lett, R.E., 1995. Analytical methods for drift samples. In Drift Exploration in the Canadian Cordillera. BC (Eds. Bobrowsky, P.T., Sibbick, S.J., Newell, J.M. and P.F. Matysek) Ministry of Energy, Mines and Petroleum Resources, British Columbia Geological Survey Paper 1995-2, pp 215-228.

Lett, R.E., and Jackaman, W., 1995. The application of Spring-water chemistry in the Driftpile Creek area, North-eastern BC In: Geological Fieldwork 1994, British Columbia Ministry of Energy, Mines and Petroleum Resources, British Columbia Geological Survey Paper 1995-1, pp 269-276.

 

Bhagwanani, B. and Lett, R.E.W., 1994. The sequential extraction of copper, silver, molybdenum, iron and manganese from geochemical standards and selected samples In: B.Grant and J.M Newell (Eds.) Geological Fieldwork 1993, British Columbia Ministry of Energy, Mines and Petroleum Resources, British Columbia Geological Survey Paper 1994-1, pp 207-214.

 

Meranger, J.C., Lett, R.E.W. and Pickering, T., 1990. An on-site method for measuring aluminum speciation in shallow well water samples from areas exposed to acid deposition. In: Geoanalysis 90 (Ed. Hall, G.E.M.), Geological Survey of Canada Bulletin 451, Pages 121-126.

 

Lett, R.E.W. and Gladwell, D.R., 1988. The examination of vegetation particulate and plant tissue geochemistry using laser ablation and neutron activation analysis. Geological Association of Canada, Abstracts with Programs, Vol. 13, Page A73.

 

Gladwell, D.R. and Lett, R.E.W., 1987. Geochemical exploration for tin using suspended sediment sample media. In Proceedings of the 11th International Geochemical Exploration Symposium, Toronto, Canada (ed. R.G.Garret), Association of Exploration Geochemists, Vol. 29, Page 409.

 

Lett, R.E.W., Lawrence, P. and Gladwell, D.R., 1986. The application of bidirectional spectral analysis to alternation mineral discrimination. In Proceedings of an Interregional Seminar on the Application of Electronic Data Processing Methods in Mineral Exploration and Development, Sudbury, October 12-25, 1986. United Nations, pp 127-134.

 

Bradshaw, P.M.D. and Lett, R.E.W., 1980. geochemical exploration for uranium using soils. Journal of Geochemical Exploration, Vol. 13, Pages 305-319.

Lett, R.E.W. and Fletcher, W.K., 1980. Syngenetic minerals in a copper-rich bog. Mineralium Deposita, Vol. 15, pp 61-67.

 

Lett, R.E.W. and Fletcher, W.K., 1979. Secondary dispersion of transition metals in a copper-rich hill slope bog in the Cascade Mountains, BC. In: Waterson, J.R. and Theobald, P.K. (Eds.), Proceedings of the 7th International Geochemical Exploration Symposium, Golden, Colorado, Association of Exploration Geochemists, pp 111-119.