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  1. Enhancing Geochemical Models with Compositional Data Analysis: A Systematic Review of Predictive Capabilities in Mineral Exploration and Environmental Assessment

    Article • June 2025, Center for Open Science

    P. Geo., M. Sc Ricardo A Valls

  2. Gems and Their Exploration: A Geological Perspective

    Article • April 2025, Center for Open Science

    P. Geo., M. Sc Ricardo A Valls

  3. How to Create Contour Maps for Geochemical Data Visualization

    Article • August 2023, Center for Open Science

    P. Geo., M. Sc Ricardo A Valls

  4. Ten Effective Ways to Visualize Geochemical Data

    Article • August 2023, Center for Open Science

    P. Geo., M. Sc Ricardo A Valls

  5. Unraveling the Earth's Secrets: How to Interpret Geochemical Data to Identify Alteration Zones

    Article • July 2023, Center for Open Science

    P. Geo., M. Sc Ricardo A Valls

  6. Unlock the World of Knowledge with Reaserchrabbitapp.com

    Article • June 2023, Center for Open Science

    P. Geo., M. Sc Ricardo A Valls

  7. BIOGEOCHEMICAL SELECTIVENESS OF CEDARS OVER METAMORPHIC ROCKS OF THE ESCAMBRAY COMPLEX, SANCTI SPIRITUS, CUBA.

    Article • May 2023, Center for Open Science

    P. Geo., M. Sc Ricardo A Valls

  8. Should I go for a P. Geo. or a Ph.D.?

    Article • May 2023, Center for Open Science

    P. Geo., M. Sc Ricardo A Valls

  9. El gran mito - CDMB

    Article • February 2023, Center for Open Science

    P. Geo., M. Sc Ricardo A Valls

  10. The great Myth- CDMB

    Article • February 2023, Center for Open Science

    P. Geo., M. Sc Ricardo A Valls

  11. Colombia’s current mining crisis

    Article • February 2023, Center for Open Science

    P. Geo., M. Sc Ricardo A Valls

  12. La arqueología y la geología

    Article • October 2019, Center for Open Science

    P. Geo., M. Sc Ricardo A Valls

  13. Determinación geoquímica de las serpentinitas

    Article • October 2019, Center for Open Science

    P. Geo., M. Sc Ricardo A Valls

  14. Crisoprasas en las cortezas de intemperismo niquelíferas

    Article • October 2019, Center for Open Science

    P. Geo., M. Sc Ricardo A Valls

  15. Nueva Clasificacion Geoquimica de los Elementos

    Article • October 2019, Center for Open Science

    P. Geo., M. Sc Ricardo A Valls

  16. Los Procesos Geoquímicos como Mecanismos de Formación de Yacimientos Minerales en Las Grutas y la Investigación Preliminar de los Mismos.

    Article • October 2019, Center for Open Science

    P. Geo., M. Sc Ricardo A Valls

  17. The first description of a VMS deposit in Cuba

    Article • April 2019, Center for Open Science

    P. Geo., M. Sc Ricardo A Valls

  18. Geology and mineral resources of Northern Haiti

    Article • April 2019, Center for Open Science

    P. Geo., M. Sc Ricardo A Valls

  19. How manganese affects the deposition of gold.

    Article • April 2019, Center for Open Science

    P. Geo., M. Sc Ricardo A Valls

  20. Potential for copper and gold mineralization in Northern Haiti

    Article • April 2019, Center for Open Science

    P. Geo., M. Sc Ricardo A Valls

  21. A VMS discovery in Northern Guatemala.

    Article • April 2019, Center for Open Science

    P. Geo., M. Sc Ricardo A Valls

  22. Five different sources of gold in one location.

    Article • April 2019, Center for Open Science

    P. Geo., M. Sc Ricardo A Valls

  23. We can use cokriging as a predictive tool in geochemical exploration

    Article • April 2019, Center for Open Science

    P. Geo., M. Sc Ricardo A Valls

  24. Using compositional data analysis with enzyme leach data

    Article • April 2019, Center for Open Science

    P. Geo., M. Sc Ricardo A Valls

  25. A Gradient Method for the Identification of Geochemical Anomalies

    Article • January 2019, Center for Open Science

    P. Geo., M. Sc Ricardo A Valls

  26. Métodos prácticos para la determinación de elementos usando pruebas químicas.

    Article • November 2018, Center for Open Science

    P. Geo., M. Sc Ricardo A Valls

  27. Laterites in Guatemala

    Article • July 2018, Center for Open Science

    P. Geo., M. Sc Ricardo A Valls

  28. Geological evolution of Guatemala

    Article • July 2018, Center for Open Science

    P. Geo., M. Sc Ricardo A Valls

  29. Compositional data analysis for geologists

    Article • July 2018, Center for Open Science

    P. Geo., M. Sc Ricardo A Valls

  30. Processing zeros in compositional data analysis

    Article • July 2018, Center for Open Science

    P. Geo., M. Sc Ricardo A Valls

  31. Diversos trabajos de geología aplicada

    Article • July 2018, Center for Open Science

    P. Geo., M. Sc Ricardo A Valls

  32. Movement of the Caribbean Plate

    Article • Geological Society London Special Publications, January 2009, Geological Society

    P. Geo., M. Sc Ricardo A Valls

  33. An ultra-rich copper deposit in Northern Guatemala.

    Article • Geochimica et Cosmochimica Acta, August 2006, Elsevier

    P. Geo., M. Sc Ricardo A Valls