Abstract
Minerals are natural resources requiring accurate investigation and planning of extraction prior the actual mining stage. National and regional mineral resource inventories would benefit from adding more detail beyond tonnage, grade and location, when evaluating both current and potential future mineral wealth. In this paper, we consider the effect of information, time and project cycle on the mineral resource inventories for Finland. The research is forward-looking, and thus, we include the identified (but not mined) portions of discovered mineral resources and also the estimated undiscovered mineral resources (terminology based on the United States Geological Survey mineral resource classification). In addition, we consider how other types of land use limit mineral exploration. The studied metals were Cu, Ni, Zn, Cr, Fe, Au, Ag, Pt and Pd. The identified mineral resources of all of these metals increased from 2008 to 2015, driven by exploration and development at already known mineral deposits and mine sites. The results show that continuation of mine production is relatively well supported by currently profitable resources (i.e. ore reserves) in active mines and via development projects in the pipeline. In addition, a significant amounts of resources are still inferred to be discoverable for Pt, Pd, Cr, Au and Cu. A quarter of the mineral potential areas are reserved for land uses that restrict but not necessarily prevent mineral exploration. A share of identified resources occur in deposits that are not feasible for mining or interesting enough for exploration and development today. Our study demonstrates that identified resources become usable within different time periods. Knowledge of mineral resources and their usability is constantly changing, and even though mineral deposits are non-renewable, known mineral resources can be increased by exploration and mine planning processes.
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Acknowledgements
The authors want to warmly thank several people for their help and insight during this research and writing of the manuscript. First of all, we thank Kalevi Rasilainen and Pasi Eilu from the Geological Survey of Finland for their insightful discussions about undiscovered resources. Secondly, we thank Raili Aumo for her precious help with collecting and organising the mineral resource statistics. We thank both the funder and our colleagues in this project. In addition, we thank several colleagues at the Geological Survey of Finland for commenting the manuscript. Finally, competent comments by an anonymous reviewer and by the editor helped to improve the final manuscript.
Funding
The research was carried out within the Academy of Finland funded project ‘Sustainable Use of Natural Resources and the Finnish Economy’ (SURE) (grant number 258559 on call: sustainable economy).
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Kivinen, M., Pokki, J. & Markovaara-Koivisto, M. Discovered and undiscovered mineral resources: Evolving accounts and future prospects of minerals in Finland. Miner Econ 31, 301–317 (2018). https://doi.org/10.1007/s13563-017-0131-x
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DOI: https://doi.org/10.1007/s13563-017-0131-x