Mannfjell Zinc Mine, Meråker, Trøndelag, Norwayi
| Regional Level Types | |
|---|---|
| Mannfjell Zinc Mine | Mine |
| Meråker | Municipality |
| Trøndelag | County |
| Norway | Country |
This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84):
63° 22' 1'' North , 11° 38' 35'' East
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
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 ElementsDetailed Mineral List:
| ⓘ 'Biotite' Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 Reference: https://aps.ngu.no/pls/oradb/minres_deposit_fakta.Main?p_objid=54&p_spraak=E |
| ⓘ Chalcopyrite Formula: CuFeS2 Reference: https://aps.ngu.no/pls/oradb/minres_deposit_fakta.Main?p_objid=54&p_spraak=E |
| ⓘ 'Chlorite Group' Reference: https://aps.ngu.no/pls/oradb/minres_deposit_fakta.Main?p_objid=54&p_spraak=E |
| ⓘ Galena Formula: PbS Reference: https://aps.ngu.no/pls/oradb/minres_deposit_fakta.Main?p_objid=54&p_spraak=E |
| ⓘ Muscovite Formula: KAl2(AlSi3O10)(OH)2 Reference: https://aps.ngu.no/pls/oradb/minres_deposit_fakta.Main?p_objid=54&p_spraak=E |
| ⓘ Muscovite var. Sericite Formula: KAl2(AlSi3O10)(OH)2 Reference: https://aps.ngu.no/pls/oradb/minres_deposit_fakta.Main?p_objid=54&p_spraak=E |
| ⓘ Pyrite Formula: FeS2 Reference: https://aps.ngu.no/pls/oradb/minres_deposit_fakta.Main?p_objid=54&p_spraak=E |
| ⓘ Quartz Formula: SiO2 Reference: https://aps.ngu.no/pls/oradb/minres_deposit_fakta.Main?p_objid=54&p_spraak=E |
| ⓘ Sphalerite Formula: ZnS Reference: https://aps.ngu.no/pls/oradb/minres_deposit_fakta.Main?p_objid=54&p_spraak=E |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 9 - Silicates | |||
| ⓘ | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| ⓘ | var. Sericite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| Unclassified Minerals, Rocks, etc. | |||
| ⓘ | 'Biotite' | - | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| ⓘ | 'Chlorite Group' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| H | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| H | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| O | Oxygen | |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| O | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| O | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| F | Fluorine | |
| F | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| Mg | Magnesium | |
| Mg | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| Al | Aluminium | |
| Al | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| Al | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Al | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| Si | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Si | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| S | Sulfur | |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Sphalerite | ZnS |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Galena | PbS |
| K | Potassium | |
| K | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| K | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| K | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Ti | Titanium | |
| Ti | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| Fe | Iron | |
| Fe | ⓘ Pyrite | FeS2 |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Zn | Zinc | |
| Zn | ⓘ Sphalerite | ZnS |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
References
Sort by
Year (asc) Year (desc) Author (A-Z) Author (Z-A)Singsaas, Per (1976) VLF-målinger Lillefjell gruve - Gilså gruve, Svartåtjern, Mannfjell gruve. Norges geologiske. NGU-rapport No.1350.13 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.
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.
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)
Mogaard, J.O., Blokkum, O. (1993) Geofysiske målinger fra helikopter over Meråkerfeltet, Nord-Trøndelag. Norges geologiske undersøkelse. NGU-rapport No. 92.153. 9 pp.
Kihle, O. (1975) CP-målinger, Mannfjell gruve/Meråker. Norges geologiske undersøkelse. NGU-rapport No.1351. 2 pp.
Karlstrøm, H. (1990) Edelmetaller i norske kaledonske sulfidforekomster. BVLI Bergforskningen, Teknisk rapport nr.77.
Other Databases
| Link to Geological Survey of Norway: | 91 |
|---|
External Links
Other Regions, Features and Areas containing this locality
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.
