Vote for your favorite mineral in #MinCup26! - Arsenuranylite vs. Talc
It's a pair of soft and lovely minerals as Stichtite and Talc compete for your votes.
Log InRegister
Quick Links : The Mindat ManualThe Rock H. Currier Digital LibraryMindat Newsletter [Free Download]
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsThe Rock H. Currier Digital LibraryGeologic TimeExplore Fossils
Minerals by PropertiesMinerals by ChemistryMineral Visual ExplorerAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral QuizTime Machine
Photo SearchPhoto GalleriesSearch by ColorPhoto Colour ExplorerNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Kotalahti mine, Leppävirta, North Savo, Finlandi
Regional Level Types
Kotalahti mineMine
LeppävirtaMunicipality
North SavoRegion
FinlandCountry

This page is currently not sponsored. Click here to sponsor this page.
PhotosMapsSearch
Latitude & Longitude (WGS84):
62° 34' 49'' North , 27° 36' 33'' East
Latitude & Longitude (decimal):
62.58028,27.60944
GRN:
N42E10
Type:
Mine
Köppen climate type:
Dfc : Subarctic climate
Nearest Settlements:
PlacePopulationDistance
Leppävirta10,936 (2014)13.4km
Jäppilä1,501 (2014)24.1km
Suonenjoki7,568 (2014)24.7km
Vehmersalmi1,889 (2014)29.3km
Varkaus22,365 (2014)32.4km
Mindat Locality ID:
253736
Long-form identifier:
mindat:1:2:253736:1
GUID (UUID V4):
0
Other/historical names associated with this locality:
Kotalahti deposit
Name(s) in local language(s):
, Itä Suomen alue (Östra Finlands region), Suomi


Nickel-copper mine.
The deposit was mined from 1954 to 1987.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


18 valid minerals.

Rock Types Recorded


Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Actinolite
Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
ⓘ 'Amphibole Supergroup'
Formula: AB2C5(T8O22)W2
ⓘ Andradite
Formula: Ca3Fe3+2(SiO4)3
ⓘ Bornite
Formula: Cu5FeS4
ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ Cummingtonite
Formula: ◻Mg2Mg5(Si8O22)(OH)2
ⓘ Gersdorffite
Formula: NiAsS
ⓘ Ilmenite
Formula: Fe2+TiO3
ⓘ Mackinawite
Formula: FeS
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ Millerite
Formula: NiS
ⓘ Pentlandite
Formula: (NixFey)Σ9S8
ⓘ Pentlandite var. Silver-bearing Pentlandite
Formula: (Ni,Fe,Ag)9S8
ⓘ Pyrite
Formula: FeS2
ⓘ Pyrrhotite
Formula: Fe1-xS
ⓘ Sphalerite
Formula: ZnS
ⓘ Tremolite
Formula: ◻Ca2Mg5(Si8O22)(OH)2
ⓘ Troilite
Formula: FeS
ⓘ Tschermakite
Formula: ◻Ca2(Mg3Al2)(Al2Si6O22)(OH)2
ⓘ Uvarovite
Formula: Ca3Cr3+2(SiO4)3

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘBornite2.BA.15Cu5FeS4
ⓘPentlandite2.BB.15(NixFey)Σ9S8
ⓘvar. Silver-bearing Pentlandite2.BB.15(Ni,Fe,Ag)9S8
ⓘSphalerite2.CB.05aZnS
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘPyrrhotite2.CC.10Fe1-xS
ⓘTroilite2.CC.10FeS
ⓘMillerite2.CC.20NiS
ⓘMackinawite2.CC.25FeS
ⓘPyrite2.EB.05aFeS2
ⓘGersdorffite2.EB.25NiAsS
Group 4 - Oxides and Hydroxides
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘIlmenite4.CB.05Fe2+TiO3
Group 9 - Silicates
ⓘAndradite9.AD.25Ca3Fe3+2(SiO4)3
ⓘUvarovite9.AD.25Ca3Cr3+2(SiO4)3
ⓘCummingtonite9.DE.05◻Mg2Mg5(Si8O22)(OH)2
ⓘActinolite9.DE.10◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
ⓘTremolite9.DE.10◻Ca2Mg5(Si8O22)(OH)2
ⓘTschermakite9.DE.10◻Ca2(Mg3Al2)(Al2Si6O22)(OH)2
Unclassified
ⓘ'Amphibole Supergroup'-AB2C5(T8O22)W2

List of minerals for each chemical element

HHydrogen
Hⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Hⓘ Cummingtonite◻Mg2Mg5(Si8O22)(OH)2
Hⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Hⓘ Tschermakite◻Ca2(Mg3Al2)(Al2Si6O22)(OH)2
OOxygen
Oⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Oⓘ Amphibole SupergroupAB2C5(T8O22)W2
Oⓘ AndraditeCa3Fe23+(SiO4)3
Oⓘ Cummingtonite◻Mg2Mg5(Si8O22)(OH)2
Oⓘ IlmeniteFe2+TiO3
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Oⓘ Tschermakite◻Ca2(Mg3Al2)(Al2Si6O22)(OH)2
Oⓘ UvaroviteCa3Cr23+(SiO4)3
MgMagnesium
Mgⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Mgⓘ Cummingtonite◻Mg2Mg5(Si8O22)(OH)2
Mgⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Mgⓘ Tschermakite◻Ca2(Mg3Al2)(Al2Si6O22)(OH)2
AlAluminium
Alⓘ Tschermakite◻Ca2(Mg3Al2)(Al2Si6O22)(OH)2
SiSilicon
Siⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Siⓘ AndraditeCa3Fe23+(SiO4)3
Siⓘ Cummingtonite◻Mg2Mg5(Si8O22)(OH)2
Siⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Siⓘ Tschermakite◻Ca2(Mg3Al2)(Al2Si6O22)(OH)2
Siⓘ UvaroviteCa3Cr23+(SiO4)3
SSulfur
Sⓘ BorniteCu5FeS4
Sⓘ ChalcopyriteCuFeS2
Sⓘ GersdorffiteNiAsS
Sⓘ MackinawiteFeS
Sⓘ MilleriteNiS
Sⓘ Pentlandite(NixFey)Σ9S8
Sⓘ PyriteFeS2
Sⓘ PyrrhotiteFe1-xS
Sⓘ SphaleriteZnS
Sⓘ TroiliteFeS
Sⓘ Pentlandite var. Silver-bearing Pentlandite(Ni,Fe,Ag)9S8
CaCalcium
Caⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Caⓘ AndraditeCa3Fe23+(SiO4)3
Caⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Caⓘ Tschermakite◻Ca2(Mg3Al2)(Al2Si6O22)(OH)2
Caⓘ UvaroviteCa3Cr23+(SiO4)3
TiTitanium
Tiⓘ IlmeniteFe2+TiO3
CrChromium
Crⓘ UvaroviteCa3Cr23+(SiO4)3
FeIron
Feⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Feⓘ AndraditeCa3Fe23+(SiO4)3
Feⓘ BorniteCu5FeS4
Feⓘ ChalcopyriteCuFeS2
Feⓘ IlmeniteFe2+TiO3
Feⓘ MackinawiteFeS
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ Pentlandite(NixFey)Σ9S8
Feⓘ PyriteFeS2
Feⓘ PyrrhotiteFe1-xS
Feⓘ TroiliteFeS
Feⓘ Pentlandite var. Silver-bearing Pentlandite(Ni,Fe,Ag)9S8
NiNickel
Niⓘ GersdorffiteNiAsS
Niⓘ MilleriteNiS
Niⓘ Pentlandite(NixFey)Σ9S8
Niⓘ Pentlandite var. Silver-bearing Pentlandite(Ni,Fe,Ag)9S8
CuCopper
Cuⓘ BorniteCu5FeS4
Cuⓘ ChalcopyriteCuFeS2
ZnZinc
Znⓘ SphaleriteZnS
AsArsenic
Asⓘ GersdorffiteNiAsS
AgSilver
Agⓘ Pentlandite var. Silver-bearing Pentlandite(Ni,Fe,Ag)9S8

Other Regions, Features and Areas containing this locality

Baltic Shield (Fennoscandian Shield)Shield
Eurasian PlateTectonic Plate
EuropeContinent

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Papunen, H. and Koskinen, J. (1985). Geology of Kotalahti nickel-copper ore. In: Nickel-copper deposits of the Baltic Shield and Scandinavian Caledonides. Geological Survey of Finland, Bulletin 333, 228-240.
https://en.wikipedia.org/wiki/Nickel_deposits_of_Finland
Papunen, H. (1970): Sulfide mineralization of the Kotalahti and Hitra nickel-copper ores, Finland. Ann Acad. Sci. Fennicae, A III 109, 1-74.
Gaál, G. (1980) Geological setting and intrusion tectonics of the Kotalahti nickel-copper deposit, Finland. Bulletin of the Geological Society of Finland, 52 (1). 101-128 doi:10.17741/bgsf/52.1.005
Mäkinen, Jari; Makkonen, Hannu V. (2004) Petrology and structure of the Palaeoproterozoic (1.9 Ga) Rytky nickel sulphide deposit, Central Finland: a comparison with the Kotalahti nickel deposit. Mineralium Deposita, 39 (4). p.405-421. doi:10.1007/s00126-004-0413-4
Mäkinen, Jari; Makkonen, Hannu V. (2004) Petrology and structure of the Palaeoproterozoic (1.9 Ga) Rytky nickel sulphide deposit, Central Finland: a comparison with the Kotalahti nickel deposit [Erratum]. Mineralium Deposita, 39 (7). p.793. doi:10.1007/s00126-004-0445-9
Makkonen, Hannu V.; Mäkinen, Jari; Kontoniemi, Olavi (2008) Geochemical discrimination between barren and mineralized intrusions in the Svecofennian (1.9 Ga) Kotalahti Nickel Belt, Finland. Ore Geology Reviews, 33 (1). 101-114 doi:10.1016/j.oregeorev.2006.05.011
Barnes, S.J., Makkonen, H.V., Dowling, S.E., Hill, R.E.T., Peltonen, P. (2009) The 1.88 Ga Kotalahti and Vammala nickel belts, Finland: Geochemistry of the mafic and ultramafic metavolcanic rocks. Bulletin of the Geological Society of Finland, 81 (2). 103-141 doi:10.17741/bgsf/81.2.002
Bomberg, Malin, Arnold, Mona, Kinnunen, Päivi (2015) Characterization of the Bacterial and Sulphate Reducing Community in the Alkaline and Constantly Cold Water of the Closed Kotalahti Mine. Minerals, 5 (3) 452-472 doi:10.3390/min5030452
Makkonen, H.V. (2015) Nickel Deposits of the 1.88 Ga Kotalahti and Vammala Belts. In Mineral Deposits of Finland. Elsevier. p.253-290. doi:10.1016/b978-0-12-410438-9.00010-8
Quick NavTopCommoditiesMineral ListRock TypesOther RegionsReferences
 
and/or  
Mindat.org® is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindat® and mindat.org® are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
Content on this site may not be used to train, fine-tune, or otherwise develop artificial intelligence or machine learning models without prior written permission - see our Terms & Conditions.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: September 8, 2026 02:15:31 Page updated: July 12, 2026 15:43:24
Go to top of page