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Mannfjell Zinc Mine, Meråker, Trøndelag, Norwayi
Regional Level Types
Mannfjell Zinc MineMine
MeråkerMunicipality
TrøndelagCounty
NorwayCountry

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Latitude & Longitude (WGS84):
63° 22' 1'' North , 11° 38' 35'' East
Latitude & Longitude (decimal):
63.36695,11.64313
GRN:
N43E04
Type:
Mine
Köppen climate type:
Dfc : Subarctic climate
Nearest Settlements:
PlacePopulationDistance
Meråker961 (2018)7.2km
Kopperå209 (2018)10.6km
Storlien116 (2012)23.5km
Skogn1,884 (2018)43.6km
Levanger8,411 (2018)45.5km
Mindat Locality ID:
418337
Long-form identifier:
mindat:1:2:418337:5
GUID (UUID V4):
0
Other/historical names associated with this locality:
Mannfjellgruva


A semimassive to massive layer of pyrite with subordinate chalcopyrite and sphalerite hosted by felsic metavolcanic rocks and overlain by banded tuffite. The ore layer has an extent of ca. 450 m and has a thickness of generally less than 2 m but occassionally of up to 4 m. During the last period of mining, some of the ore showed contents of up to 1.8% Cu and 5.3% Zn. Some Au-enrichments of 1 ppm and locally even higher were found in later analyses.
The mine was possibly operated by the Merakergodset company in 1901 and 1904-05, and by the A/S Meraker Gruber in 1907-09 and 1913-18. A total of 100 Kt of ore was produced.
The deposit was the subject of further study in 1975 by the NGU/Elkem-Spigerverket A/S, in 1985 by BP, and in 1991 and 1992-93 by the NGU.
Apart from the main locality, a sub-locality Storbekken is listed: 63.3763690,11.6495850. This is possibly an extension of the main ore zone.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


6 valid minerals.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘSphalerite2.CB.05aZnS
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘGalena2.CD.10PbS
ⓘPyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
Group 9 - Silicates
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘvar. Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Chlorite Group'-

List of minerals for each chemical element

HHydrogen
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
OOxygen
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ QuartzSiO2
Oⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
FFluorine
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
MgMagnesium
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
AlAluminium
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SiSilicon
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ QuartzSiO2
Siⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SSulfur
Sⓘ ChalcopyriteCuFeS2
Sⓘ GalenaPbS
Sⓘ PyriteFeS2
Sⓘ SphaleriteZnS
KPotassium
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Kⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
TiTitanium
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
FeIron
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feⓘ ChalcopyriteCuFeS2
Feⓘ PyriteFeS2
CuCopper
Cuⓘ ChalcopyriteCuFeS2
ZnZinc
Znⓘ SphaleriteZnS
PbLead
Pbⓘ GalenaPbS

Other Databases

Link to Geological Survey of Norway:91

Other Regions, Features and Areas containing this locality

Eurasian PlateTectonic Plate
EuropeContinent
ScandinaviaRegion

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References

Langberg (?) Utdrag av myntmester Langbergs manuskript til Norges Kobberverk. Selbu og Meråker Kobberverk. Norges geologiske undersøkelse. Bergarkivet No.BA 1817. 11 pp. (Overview over the mining history of Selbu and Meraker)
aps.ngu.no (n.d.) https://aps.ngu.no/pls/oradb/minres_deposit_fakta.Main?p_objid=54&p_spraak=E
Holmsen, H. (1909) Meråker gruver. Norges geologiske undersøkelse. Bergarkivet No. BA 3283. 7 pp.
Schøyen, Niels (1920) Malmgeologi i Meråkerfeltet. Norges geologiske undersøkelse. Bergarkivet No. BA 3278.13 pp.
Kihle, O. (1975) CP-målinger, Mannfjell gruve/Meråker. Norges geologiske undersøkelse. NGU-rapport No.1351. 2 pp.
Singsaas, Per (1976) VLF-målinger Lillefjell gruve - Gilså gruve, Svartåtjern, Mannfjell gruve. Norges geologiske. NGU-rapport No.1350.13 pp.
Karlstrøm, H. (1990) Edelmetaller i norske kaledonske sulfidforekomster. BVLI Bergforskningen, Teknisk rapport nr.77.
Mogaard, J.O., Blokkum, O. (1993) Geofysiske målinger fra helikopter over Meråkerfeltet, Nord-Trøndelag. Norges geologiske undersøkelse. NGU-rapport No. 92.153. 9 pp.
Grenne, T., Hertogen, J., Solli, A., Birkeland, A., Erichsen, E., Sandstad, J.S. (1995) The sequential development of magmatic and ore-forming processes in the Fundsjø Group, Meråker district, Central Norway. Norges geologiske undersøkelse. NGU Bulletin No. 427. pp 108-111.
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