Orogenic gold systems are arguably the most variable mineral system globally in terms of an extreme range of depositional depths corresponding P T conditions and wallrock
The study covers 39 gold occurrences in Finland where gold is the only or most important ore metal They occur as clusters in three geologically different environments in eastern Finland
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The refractory gold content of Suurikuusikko ore is hosted within the crystal structure of pyrite and arsenopyrite which are disseminated in hydrothermally altered rocks
While the major component characteristics of the ore forming fluids in orogenic gold deposits are well established and broadly similar for all deposits the ultimate source of
The presence of late gold deposition overprinting earlier base metal rich ore fits with observations from other base metal‑gold deposits from northern Finland
Multi element crust leach analysis of H2O CO2 inclusion fluids from a suite of six vein samples from gold quartz veins in the Brusson district demonstrates that their solute
Boron sulphur and copper isotope systematics in the orogenic gold deposits of the Archaean Hattu schist belt eastern Finland Ore Geology Reviews IF Pub Date 2016
Most of Finland s ore deposits can geologically be classified as follows 1 chromium platinum group metals nickel and iron vanadium ores associated with
Numerous gold deposits and occurrences are known in northern Finland Eilu et al 2003 Eilu et al 2007 The majority of these have been classified as orogenic gold
The orientation of extension quartz−sulfide veins within diorite hosted gold lodes suggests that maximum σ 1 and minimum σ 3 principal stresses at the time of vein
Vinsa 29 and Kivimaa 30 The Kivimaa Cu Au ore vein is located in the central parts of the Protero zoic Per ipohja schist area at a place where lower marie volcanic rocks
Fine powdered ore slurry containing native gold and silver is then passed over copper plates amalgamated wi th a thin layer of mercury onto which the noble metals adhere
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Suurikuusikko is a gold deposit in central Finnish Lapland which had a premining gold endowment of million ounces The deposit is hosted by tholeiitic mafic
A total of million tonnes of Gold ore resources were estimated in the State including million tonnes resources of Bhukhia Jagpura Delwarabelt Banswara
Diagnostic leaching tests show that an average of only % of the gold is in cyanide leachable form free gold whereas on average 57% of the gold is bound to pyrite and arsenopyrite as
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Abstract—Gold and silver are capable of forming stable natural compounds with different elements For gold 36 minerals are known 10 in the class Native metals
Archean and Paleoproterozoic mineral systems in Finland Orogenic gold mineral systems in Finland Au only and Au base metal Cu Co Ni atypical metal associations
