Assessment of undiscovered metal resources in Finland

Predicting grade-tonnage characteristics of undiscovered mineralisation: application of the USGS Three-part Undiscovered Mineral Resource Assessment to the Sandstone Greenstone Belt of the Yilgarn Block, Western Australia

“…The USGS Three-part Undiscovered Mineral Resource Assessment provides an estimate of the number and quality of undiscovered deposits within a given region. The basic concepts of the Assessment were initially developed at the USGS (Singer 1975) and have since been applied at several scales, from global (Drew and Menzie 1993) to province (Lisitsin et al 2014), and for several commodities including nickel (Rasilainen et al 2016), copper (Hammarstrom et al 2005) and gold (Lisitsin et al 2014).…”

Building Geochemical Vectors with Trace Element Compositions of Sulfides in Orogenic Gold Mineral Systems in Northern Finland

“…This region contains orogenic gold occurrences of the Au-only and Au-base-metal types (e.g., orogenic gold deposits with atypical metal associations), distributed along major structural features in metamorphosed volcano-sedimentary host sequences of the Central Lapland Greenstone Belt (CLGB), the Kuusamo belt (KB) and the Peräpohja belt (PB; Eilu et al, 2015). The polymetallic mineral deposit types contain in addition to gold, economically significant concentrations of cobalt and other battery commodities (Ni, Cu, graphite), or display indications of mineralizing processes causing additional metal enrichments (e.g., Zn, PGE; Eilu et al, 2015;Rasilainen et al, 2020). When considering the transition from a fossil fuel-based economy into a non-fossil fuels one, the current requirements and consumption of European industrial businesses indicates that an unprecedented demand for technology metals will be required (Michaux, 2021).…”

Gold Prospects in the Western Segment of the Russian Arctic: Regional Metallogeny and Distribution of Mineralization

“…The distribution of gold resources in Northern Finland (Finnish Lapland), in the area adjacent to the Murmansk region and Russian Northern Karelia, differs significantly: gold in Ni-Cu (the Kevitsa deposit) and in the PGE low-sulfide deposits (the Ahmavaara, Kontijӓrvi, Siika-Kӓmӓ reef, etc.) only makes up 15% of the gold resources in Finnish Lapland, and the other 85% relates to gold deposits in metamorphic complexes within greenstone belts [4,5]. Presently in Northern Finland, there is one world class deposit (Suurikuusikko) with indicated and inferred resources of 260 t and an annual production of 5.5-6 t Au [6], as well as a number of medium and small deposits, and dozens of prospective gold occurrences (Figure 1) [7].…”