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English version | ||||
| MALMDATABASEN | |||||
| Forekomstområde 1833 - 053 | |||||
| (Sist oppdatert 04.okt.2017) | |||||
Navn på deposit area : Nevernes |
| (Objekt Id : 1833,053,00,00) |
| Forekomstområdet tilhører provinsen : Dunderlandsdalen jern |
| Lokalisering |
| Fylke : | Nordland (18) | Kommune : | Rana (1833) |
| Kart 1:50000: | Storforshei (2027-4) | Kart 1:250000: | Mo i Rana |
| Markeringspunkt: | Lengdegrad: | 14.5491210 | Breddegrad: | 66.3694830 |
| EU89-UTM Zone 33 | (Coordinates IS confirmed) |
| X-koord: | 479832 m. | Y-koord: | 7361167 m. |
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| Materialtype |
| Hovedtype: | Jernmetaller (Fe, Mn, Ti) | Subtype: | Jern | |
| Element(s): | Fe |
| Production |
| Activity: | Prospektering | Reserves: | ||
| Prod. method: | Production: | |||
| Prod. status: | Volume of dump: |
| Betydning |
| Offentlig: | Not Assessed (reg. 07.12.2015) |
| Economical: | Kan være viktig , (Confirmed 25.feb.2005 by Agnes Raaness) |
Products |
| Element/product | Crude ore grade or quality | |
| FE_MAG | 10 % | |
| FE_TOT | 37 % |
Operations |
| From - To | Activity | Comments | |
| 1969 - 1969 | Geology | Company/Institution :Rana Gruber | |
| 1970 - 1970 | Geophysics | Company/Institution :Rana Gruber |
Mineralization |
| Era: | Proterozoic | Period: | Neoproterozoic | |
| Dating: | Method: | |||
| Genesis: | Sedeks | Form: | Lag | |
| Main texture: | Båndet | Min. distribution: | Massiv |
| Main grain size: | Grovkornet (>3 mm) | Main alteration: |
| Strike/Dip: | 120 / 50 | Direction: | 290 | |
| Plunge: | 30 |
| Stratigraphic classification of host rock |
| Era: | Proterozoic | Period: | Neoproterozoic |
| Province: | Caledonides | |
| Geotec.unit: | Rødingsfjell Nappe Complex | |
| Tectonic complex: | Midtre allokton | |
| Igneous complex: |
| Group: | Ørtfjell-gruppen | Formation: | Dunderland jernformasjon |
Mineralogy |
| Relationship | Mineral | Amount | |
| Gangue mineral | Quartz | Major mineral (>10%) | |
| Gangue mineral | Chlorite | Subordinate mineral (1-10%) | |
| Gangue mineral | Calcite | Subordinate mineral (1-10%) | |
| Gangue mineral | Oligoclase | Subordinate mineral (1-10%) | |
| Gangue mineral | Epidote | Subordinate mineral (1-10%) | |
| Gangue mineral | Apatite | Subordinate mineral (1-10%) | |
| Gangue mineral | Muscovite | Subordinate mineral (1-10%) | |
| Gangue mineral | Biotite | Subordinate mineral (1-10%) | |
| Gangue mineral | Amphibole | Subordinate mineral (1-10%) | |
| Gangue mineral | Garnet | Accessory mineral (<1%) | |
| Gangue mineral | Pyrite | Accessory mineral (<1%) | |
| Ore mineral | Magnetite | Major mineral (>10%) | |
| Ore mineral | Hematite | Major mineral (>10%) |
Lithology: |
| Relationship | Rock | Origin | |
| Unknown | Amfibolitt | Extrusive Original rock :Basalt |
|
| Metamorphic facies :Amphibolite | |||
| Unknown | Lys glimmerskifer | Sedimentary Original rock :Greywacke |
|
| Metamorphic facies :Amphibolite | |||
| Unknown | Karbonatglimmersk. | Sedimentary Original rock :Argillaceous sediment |
|
| Metamorphic facies :Amphibolite |
Structures |
| Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
| Unknown | Primary layering | Strike/Dip :120 / 50 | Syn-mineralisation ;...Effect :None | |
| Unknown | Foliation | Syn-mineralisation ;...Effect :None | ||
| Unknown | Fold axis | Syn-mineralisation ;...Effect :None |
Opplysning(er) i fritekstformat |
| Fri tekst |
| Nevernes mt.-hem.malmfelt -------------------------------------- ligger i luftlinje 1,4 km SV for Nevernes kirke 360 m.o.h. i nordhellingen av Langfjell. Hovedforekomsten (vest for Kvernbekken), innenfor et 600 x100m stort område, består av 3 hovedmalm-lag for det meste 7-20 m tykke, men tett sammenfoldet innenfor 100 meters bredde. Strøket er overveiende N70°V med et generelt fall 40° mot sør. Selve feltet danner en 120 m bred hylle i dalsiden som er ganske myrlendt. I malmblotningene ser man både grovbladet hematittmalm og grovkornet ren magnetittmalm, og det er observert 10 cm granatfels. Man har ingen kjemiske malm-analyser, men gehalten anslås til: 35 - 40 % Fe-total og 10 % Fe-magn. Et overslag på brytbar malm i et 500 m langt og opptil 70 m dypt dagbrudd med gråberg/malm i forholdet 1/1 gir 3.9 mill. tonn ned til nivå 290. Med råmalmgehalt 37 % Fe-total og 10 % Fe-magn. er forholdet hem./mt.=73/27=2,7. Mineralogisk har forekomsten følgende sammensetning: 35,7 % hematitt, 13,8 % magnetitt, 28,8 % kvarts, 4,8 % epidot, 6,0 % kalkspat, 3,0 % kloritt, 3,2 % amfibol, 1,0 % oligoklas, 1,0 % biotitt, 1,0 % muskovitt, 1,3 % apatitt, 0,1 % granat, 0,1 % svovelkis. |
Bibliography: |
| From NGU's Reference Archive: |
| Bugge, Jens A.W. , 1948 |
| Rana gruber. Geologisk beskrivelse av jernmalmfeltene i Dunderlandsdalen. |
| ;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.171;1-149 + f pages |
| Abstract: | |
| (forkortet) The mining company A/S Rana Gruber has made extensive exploration of the iron ore deposits in Dunderlandsdalren under the leadership of mining engineer Worm Lund and. The field work comprises the following sections: Geodetic works and constructions of topographic maps. - Geology. - Exploration of the ore deposits by diamond drilling. - Exploration of the ground above the solid rocks (for foundation). The present paper gives and outline of the geology. Map 1 illustrates the main geological features of Rana. The sedimenatary rocks belong to the lower part of the sediments of the Caledonian mountain range. They are older than the fossil-bearing Sulitjelma-schists described by Th. Vogt, and are probably of lower Ordovician or Upper Cambrianage age. The most characterisitctic features in the western part of the area illustrate d in map 2 are the graeat folds in with axes striking E-W and dipping 10-20 W There are two anticlinededs seperated by syncline. The northern Bomfjell- anticline is superseded toward south by the Svanheim-syncline and this again by the Nevernes-Lasken anticline. Toward east the fold axes turn from E-W to NNE -SSW, while the pitch varies between NE and SW. The compression of the rocks is higher in the eastern parts than in the western ones. |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| NO0617.02 | Bedrock |
|
| NB! All analyse values are shown at the end of the printout.: |
Navn på sample point : Prøvepunkt 1 |
| (Objekt Id : 1833,053,00,01) |
| Lokalisering |
| Fylke : | Nordland (18) | Kommune : | Rana (1833) |
| Kart 1:50000: | Storforshei (2027-4) | Kart 1:250000: | Mo i Rana |
| Markeringspunkt: | Lengdegrad: | 14.5491210 | Breddegrad: | 66.3694830 |
| EU89-UTM Zone 33 | (Coordinates IS confirmed) |
| X-koord: | 479832 m. | Y-koord: | 7361167 m. |
|
|
| Materialtype |
| Hovedtype: | Jernmetaller (Fe, Mn, Ti) | Subtype: | Jern | |
| Element(s): | Fe |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| NO0617.01 | Bedrock |
|
| NB! All analyse values are shown at the end of the printout.: |
Analyse Results |
| from |
| Forekomstområde 1833 - 053 Nevernes |
Element analyses |
( *=parts pr. million, #=parts pr.billion, Negative values means below detection limit value.) |
| Sample No. | Sample Type | Cu* | Zn* | Pb* | Co* | Ni* | Ag* | Au# |
| NO0617.01 | Bedrock | 15 | 19 | -3 | -1 | 11 | .3 | 3.0 |
| NO0617.02 | Bedrock | 10 | 25 | -3 | -1 | 21 | -.3 | -2.0 |
| ------------------ |
| Sample No. | Pt# | Pd# | Rh# | As* | Cd* | Ba* | Mo* | Sb* | Bi* |
| NO0617.01 | -3.0 | -3.0 | -5.0 | 2 | 1.9 | 14 | -1.00 | 3 | -2 |
| NO0617.02 | -3.0 | -3.0 | -5.0 | -2 | 1.5 | 112 | 3.00 | -2 | 3 |
| ------------------ |
| Sample No. | S% | V* | Cr* | Mn* | Fe% | Th* | U* | W* | Sr* |
| NO0617.01 | .01 | 29 | 21 | 102 | 29.31 | 2.00 | 6.00 | 9 | 213.0 |
| NO0617.02 | .08 | 44 | 27 | 153 | 22.36 | 3.00 | -5.00 | -2 | 95.0 |
| ------------------ |
| Sample No. | La* | B* | |||||||
| NO0617.01 | 15.00 | -3 | |||||||
| NO0617.02 | 15.00 | -3 |
| Faktaarket ble generert 13.06.2026 |
| Spørsmål eller kommentarer vedrørende faktaarket kan mailes til: ressursdatabaser@ngu.no |
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