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Rødtjern Mine, Feragen chromium mines, Røros, Trøndelag, Norwayi
Regional Level Types
Rødtjern MineMine
Feragen chromium minesGroup of Mining Districts
RørosMunicipality
TrøndelagCounty
NorwayCountry

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Latitude & Longitude (WGS84):
62° 33' 12'' North , 11° 46' 55'' East
Latitude & Longitude (decimal):
62.55354,11.78208
GeoHash:
G#: u707u5e2y
GRN:
N42E05
Type:
Mine
Köppen climate type:
Dfc : Subarctic climate
Nearest Settlements:
PlacePopulationDistance
Røros3,496 (2018)20.5km
Mindat Locality ID:
34439
Long-form identifier:
mindat:1:2:34439:6
GUID (UUID V4):
0
Other/historical names associated with this locality:
Røtjern grube; Røtjønngruva
Other Languages:
Norwegian:
Rødtjerngruva, Feragenfeltet, Røros, Trøndelag, Norge


Nilsson (1979) nr. 32 locality. He placed 4 markers on his map. There is a clearly visible, rectangular hole at 62.552719109584345,11.782595515251161.
A trench at 62.55384,11.78119
A trench at 62.55309123857296,11.783192306756975?
62.55473980056151,11.779076457023622

Nilsson places a nr. 42 locality at his map, calling this the NW end of the Rödtjerngruben. It is difficult to see on maps/pictures where the exact spot can have been.

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


7 valid minerals.

Detailed Mineral List:

ⓘ Awaruite
Formula: Ni3Fe
ⓘ Brucite
Formula: Mg(OH)2
ⓘ Chromite
Formula: Fe2+Cr3+2O4
ⓘ Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
ⓘ Clinochlore var. Chromium-bearing Clinochlore
Formula: Mg5(Al,Cr)2Si3O10(OH)8
ⓘ 'Fayalite-Forsterite Series'
ⓘ Pyrite
Formula: FeS2
ⓘ 'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4
ⓘ Talc
Formula: Mg3Si4O10(OH)2
ⓘ Uvarovite
Formula: Ca3Cr2(SiO4)3
Colour: emerald green

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘAwaruite1.AE.20Ni3Fe
Group 2 - Sulphides and Sulfosalts
ⓘPyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
ⓘChromite4.BB.05Fe2+Cr3+2O4
ⓘBrucite4.FE.05Mg(OH)2
Group 9 - Silicates
ⓘUvarovite9.AD.25Ca3Cr2(SiO4)3
ⓘTalc9.EC.05Mg3Si4O10(OH)2
ⓘClinochlore9.EC.55Mg5Al(AlSi3O10)(OH)8
ⓘvar. Chromium-bearing Clinochlore9.EC.55Mg5(Al,Cr)2Si3O10(OH)8
Unclassified
ⓘ'Fayalite-Forsterite Series'-
ⓘ'Serpentine Subgroup'-D3[Si2O5](OH)4

List of minerals for each chemical element

HHydrogen
Hⓘ BruciteMg(OH)2
Hⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Hⓘ Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Hⓘ TalcMg3Si4O10(OH)2
Hⓘ Serpentine SubgroupD3[Si2O5](OH)4
OOxygen
Oⓘ BruciteMg(OH)2
Oⓘ ChromiteFe2+Cr23+O4
Oⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Oⓘ Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Oⓘ TalcMg3Si4O10(OH)2
Oⓘ UvaroviteCa3Cr2(SiO4)3
Oⓘ Fayalite-Forsterite Series
Oⓘ Serpentine SubgroupD3[Si2O5](OH)4
MgMagnesium
Mgⓘ BruciteMg(OH)2
Mgⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Mgⓘ Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Mgⓘ TalcMg3Si4O10(OH)2
Mgⓘ Fayalite-Forsterite Series
AlAluminium
Alⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Alⓘ Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
SiSilicon
Siⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Siⓘ Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Siⓘ TalcMg3Si4O10(OH)2
Siⓘ UvaroviteCa3Cr2(SiO4)3
Siⓘ Fayalite-Forsterite Series
Siⓘ Serpentine SubgroupD3[Si2O5](OH)4
SSulfur
Sⓘ PyriteFeS2
CaCalcium
Caⓘ UvaroviteCa3Cr2(SiO4)3
CrChromium
Crⓘ ChromiteFe2+Cr23+O4
Crⓘ Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Crⓘ UvaroviteCa3Cr2(SiO4)3
FeIron
Feⓘ AwaruiteNi3Fe
Feⓘ ChromiteFe2+Cr23+O4
Feⓘ PyriteFeS2
Feⓘ Fayalite-Forsterite Series
NiNickel
Niⓘ AwaruiteNi3Fe

Other Regions, Features and Areas containing this locality

Eurasian PlateTectonic Plate
EuropeContinent
ScandinaviaRegion

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

foreninger.uio.no (n.d.) https://foreninger.uio.no/ngf/ngt/pdfs/NGT_54_2_177-182.pdf
www.ngu.no (n.d.) https://www.ngu.no/upload/Publikasjoner/Rapporter/1970-1979/1650_33A.pdf
foreninger.uio.no (n.d.) https://foreninger.uio.no/ngf/ngt/pdfs/NGT_60_4_235-254.pdf
Prestvik, Tore (1974) Norwegian chromian ugrandite-garnets. Contributions to the mineralogy of Norway, no. 58. Norsk Geologisk Tidsskrift [Norwegian Journal of Geology], 54 (2) 177-182
Nilsson, L. P. (1979): Undersøkelse av ultramafiske bergarter og krommalm på strekningen Røros-Feragen, Røros, Sør-Trøndelag. NGU rapport 1650/33A, 76 p.
Moore, Alan C., Hultin, Ivar (1980) Petrology, mineralogy, and origin of the Feragen ultramafic body, Sør-Trøndelag, Norway. Norsk Geologisk Tidsskrift [Norwegian Journal of Geology], 60 (4) 235-254
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