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https://www.youtube.com/@valls_geoconsultant?sub_confirmation=1 For more videos about geology, geochemistry, AI, and much more, please visit and subscribe for free here: Golden droplets- https://shorturl.at/fetV1 Geovoices- https://tinyurl.com/m23pp4pb News about geology- https://tinyurl.com/3979urhy This video reveals a hidden field geology secret by explaining why pros use a latex condom as one of many modern techniques of exploration in geochemistry. This method serves as a form of field-expedient enrichment by ensuring the absolute preservation of in situ chemical parameters and the exclusion of extraneous analytes, effectively bypassing the limitations of chemical dilution. representativeness. Timestamp 0:00 – Intro: The strange but useful “condom” trick in field geology. ​0:30 – Typical challenges when sampling in wet or dirty conditions. 1:00 – Explaining the main idea: protecting instruments and samples. 1:30 – Practical examples in stream sediment and soil sampling. 2:00 – Using condoms to waterproof gear (phones, GPS, notebooks). 2:30 – Safety, hygiene, and common‑sense considerations in the field. 3:00 – Other “unconventional” but effective field hacks. ​3:30 – Final advice for young geologists and call to subscribe. The bridge between Academy and Industry! P. Geo. Ricardo A Valls, M. Sc. and Geo Gadfly Valls Geoconsultant ORCID ID- https://orcid.org/0000-0002-5421-0914 Scopus Author ID: 7003369619/35335510700 ResearcherID: S-6604-2018 If you like this content, please "buy me a coffee" https://www.buymeacoffee.com/goldendroplets #valls_geoconsultant #FieldGeology #Geochemistry #HeavyMinerals Some references Brenko, T., Ružičić, S., Radonić, N., Puljko, M., & Cvetković, M. (2024). Geochemical factors as a tool for distinguishing geogenic from anthropogenic sources of potentially toxic elements in the soil. Land, 13(4), 434. https://doi.org/10.3390/land13040434 Day, S. J. A., Paulen, R. C., Smith, I. R., & King, R. D. (2018). Heavy-mineral and indicator-mineral data for stream sediments in southwest Northwest Territories: New potential for undiscovered mineralization (Geological Survey of Canada Open File 8362). Natural Resources Canada. https://doi.org/10.4095/306587 Doherty, M. E., Arndt, K., Chang, Z., Kelley, K., & Lavin, O. (2023). Stream sediment geochemistry in mineral exploration: A review of fine-fraction, clay-fraction, bulk leach gold, heavy mineral concentrate and indicator mineral chemistry. Geochemistry: Exploration, Environment, Analysis, 23(4). https://doi.org/10.1144/geochem2022-039, Falck, H., Day, S., Pierce, K. L., Cairns, S., & Watson, D. (2015). Geochemical, mineralogical and indicator mineral data for stream silt sediment, heavy mineral concentrates and waters, Flat River area, Northwest Territories (NWT GMRTC. (2024, March 11). Mineral exploration geochemistry: Soil sampling methodology. https://gmrtc.com/2024/03/11/ssgc01en/ Layton-Matthews, D., & McClenaghan, M. B. (2022). Current techniques and applications of mineral chemistry to mineral exploration; examples from glaciated terrain: A review. Minerals, 12(1), 59. https://doi.org/10.3390/min12010059, Lett, R. E. (2007). Drainage geochemical surveys: Stream sediments, lake sediments, moss mats, heavy minerals. BC Ministry of Energy, Mines & Petroleum Resources; Association of Applied Geochemists. Lett, R. E., Friske, P. W. B., & McClenaghan, M. B. (2022). Heavy mineral and geochemical data from detailed stream-sediment, stream-water, and moss-mat sampling in northwestern British Columbia (GeoFile 2022-10). British Columbia Geological Survey. Lyman, G. (2023). A statistical theory for sampling of particulate materials. Minerals, 13(7), 905. https://doi.org/10.3390/min13070905, Makvandi, S., Pagé, P., Tremblay, J., & Girard, R. (2021). Exploration for platinum-group minerals in till: A new approach to the recovery, counting, mineral identification and chemical characterization. Minerals, 11(3), 264. https://doi.org/10.3390/min11030264, Meyer, W. T., Theobald, P. K., Jr., & Bloom, H. (1979). Stream sediment geochemistry. In P. J. Hood (Ed.), Geophysics and geochemistry in the search for metallic ores (Economic Geology Report 31, pp. 411-434). Geological Survey of Canada. Moles, N., & Chapman, R. (2019). Gold as an indicator mineral, and integration with other exploration methods. Geological Survey of Finland. Valls Alvarez, R. A. (n.d.). Eficiencia de los analisis espectrales de jaguas en las investigaciones geologicas: Aspectos metodologicos. Revista Universidad Eafit, (84), 65-75. Valls, R. (n.d.). Practicing "safe geology" in the field [Video]. YouTube. Winkler, E. (1999). Technology assessment report SimulProbe: SimulProbe Technologies, Inc. Center for Energy Efficiency and Renewable Energy, University of Massachusetts Amherst.