(Last updated: 07.02.2024)
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Norsk versjon | ||||
| THE ORE DATABASE | |||||
| Occurence 1833 - 038 Nord-Dunderland | |||||
| (Object Id: 2716) (Last updated: 07.02.2024) |
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| Belongs to the Province: Dunderlandsdalen jern |
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| Location |
| County: | Nordland | Municipality: | Rana (1833) |
| Map 1:50000: | Dunderlandsdal (2027-1) | Map 1:250000: | Mo i Rana |
| Coordinate system: | EU89-UTM Zone 33 |
| East: | 491082 m. | North: | 7369097 m. |
| Longitude: | 14.8000690 | Latitude: | 66.4411470 |
| Show on map |
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|
| Resource |
| Resource Type: | Ferrous metals(Fe, Mn, Ti) | Resource Subtype: | Iron | |
| Element(s): | Fe |
| Importance |
| Raw material meaning: | Not Assessed (reg. 07.12.2015) |
| Resources and production |
| Activity: | Exploration | Reserves: | ||
| Operating method: | Historical production: |
Products |
| Element/product | Crude ore grade or quality | Reg. date | |
| Fe-mag. | 35000 ppm | 23.10.1992 | |
| Fe-total | 37 % | 23.10.1992 | |
| P | 2000 ppm | 23.10.1992 |
Operations |
| From - To | Activity | Comments | |
| Pitting | |||
| 1949 - 1949 | Core drilling | Company/Institution :A/S Sydvaranger | |
| 1949 - 1951 | Geology | Company/Institution :Rana Gruber | |
| 1970 - 1970 | Geophysics | Company/Institution :Rana Gruber | |
| 1970 - 1981 | Geology | Company/Institution :Rana Gruber |
Mineralization |
| Era: | Proterozoic | Period: | Neoproterozoic | |
| Genesis: | Sedex | Form: | Layer | |
| Main texture: | Banded | Min. distribution: | Massive (>50 % ore minerals) |
| Main grain size: | Coarse grained (> 3 mm) | Main alteration: |
| Strike/Dip: | 200 / 50 | Direction: | 225 | |
| Plunge: | 20 |
| Stratigraphic classification of host rock |
| Era: | Proterozoic | Period: | Neoproterozoic |
| Province: | Caledonides | |
| Geotec.unit: | Rødingsfjell Nappe Complex | |
| Tectonic complex: | Midtre allokton | |
| Igneous complex: |
| Group: | Ørtfjell | Formation: | Dunderland |
Mineralogy |
| Relationship | Mineral | Amount | |
| Gangue mineral | Quartz | Major mineral (>10%) | |
| Gangue mineral | Epidote | Subordinate mineral (1-10%) | |
| Gangue mineral | Apatite | Subordinate mineral (1-10%) | |
| Gangue mineral | Amphibole | Subordinate mineral (1-10%) | |
| Gangue mineral | Chlorite | Subordinate mineral (1-10%) | |
| Gangue mineral | Calcite | Subordinate mineral (1-10%) | |
| Gangue mineral | Dolomite | Subordinate mineral (1-10%) | |
| Gangue mineral | Biotite | Subordinate mineral (1-10%) | |
| Gangue mineral | Muscovite | Subordinate mineral (1-10%) | |
| Ore mineral | Hematite | Major mineral (>10%) | |
| Ore mineral | Magnetite | Subordinate mineral (1-10%) |
Lithology: |
| Relationship | Rock | Origin | |
| Unknown | Karb.gl.skifer | Sedimentary Original rock :Argillaceous sediment |
|
| Metamorphic facies :Amphibolite | |||
| Unknown | Lys glimmerskifer | Sedimentary Original rock :Greywacke |
|
| Metamorphic facies :Amphibolite |
Structures |
| Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
| Unknown | Primary layering | Strike/Dip :45 / 75 | Syn-mineralisation ;...Effect :None |
Information(s) in free text format |
| Free text |
| N-Dunderland mt.-hem.-malm danner en direkte 6.5 km lang fortsettelse av Ørtfjell-forekomsten (Kvannevannsmalmen). Selve hovedfeltet har en feltutstrekning på 3.5 km, videre nordover kan malmen følges nye 3 km (1-4 m tykk). De sørvestligste 1.5 km strøklengde har de største malmtykkelser, der står malmen 65-80° mot sørøst, videre nordover står malmen 45-55° mot nordvest.Hovedfeltet i SV er svært oppstykket i 5-10 m tykke linser. Oppstykkingen skyldes flere steder forkastninger som danner 60° med malmdragets strøk. Sideforkastningen er 10-20 m, den østlige del er forkastet mot nord. De viktigste malmsteder er: m.o.h. UTM - øst UTM-nord --------------------------------------------------------------------- N-Dunderland i sørvest 300 490525 7368750 N-Dunderland 260 490950 7369050 N-Dunderland, hovedfelt 270 491150 7369300 N-Dunderland 260 491400 7369400 N-Dunderland 220 491800 7369750 N-Dunderland 190 492150 7370100 N-Dunderland 160 492450 7370450 N-Dunderland - Skredmoen 150 492650 7371000 N-Dunderland - Skredbekken 180 492925 7371950 N-Dunderland - Grotjørneng 190 493100 7372400 N-Dunderland - Skillbekken 260 493750 7374300 En malmberegning bygget på opplysninger fra røsking og diamantboring gir: 5,3 mill.t dagbruddsmalm i sørvest-feltet ned til kote 200. 9,9 mill.t underjordsmalm i sørvest-feltet ned til kote 125. 3,9 mill.t underjordsmalm i nordfeltet. --------------------------------------------------------- Totalt 19,1 mill.t påvist pluss sannsynlig malm. Muligheter for utnyttbare malmreserver utover dette synes små. Eller sagt på en annen måte, man har ikke mere malm enn: Gj.sn. tykkelse Lengde Dyp Tonnasje (Sp.v.3,5) ------------------------------------------------------------------------------------------------- N-Dunderland i SV 12,4 m 3500 m 100 m 15190000 tonn N-Dunderland i N 2,5 m 3000 m 150 m 3935500 tonn Nord-Dunderland-malmen er forholdsvis rik: 37 % Fe-total 3,5 % Fe-magn. 0,2 % P |
Bibliography: |
| From NGU's Reference Archive: |
| Stadheim, J. , 1940 |
| Dunderlandsdalen |
| ;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 3354;8 pages |
| Abstract: | |
| Rapporten er en håndskrevet fullrapport over undersøkelse av de viktigste jernmalmforekomster fra Dunderlandsdalen i nord til Svenningdal i syd. Forekomstene er delt i fire hovedområder. 1. Nord-Rana 2. Elsfjord 3. Vefsen 4. Kysten utenfor Ranafjorden Eiendomsforhold, geografisk og geologisk beskrivelse av forekomstene er rapportens vesenligste innhold. |
| Søvegjarto, Ulrik , 1972 |
| Berggrunngeologiske Undersøkelser i Dunderlandsdalen, Nordland. |
| ;UiO Geologisk fellesråd;AVHANDLING |
| 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 | ||||
| Rana-5 | Bedrock |
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| NB! All analyse values are shown at the end of the printout.: |
Name of Locality: Skjerp 1 |
| (Object Id: 3279 38,01,00) |
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| Location |
| County: | Nordland | Municipality: | Rana (1833) |
| Map 1:50000: | Dunderlandsdal (2027-1) | Map 1:250000: | Mo i Rana |
| Coordinate system: | EU89-UTM Zone 33 |
| East: | 490457 m. | North: | 7368547 m. |
| Longitude: | 14.7860980 | Latitude: | 66.4361950 |
| Show on map |
|
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| Resource |
| Resource Type: | Ferrous metals(Fe, Mn, Ti) | Resource Subtype: | Iron | |
| Element(s): | Fe |
| Resources and production |
| Activity: | Exploration | Reserves: | ||
| Operating method: | Historical production: |
Name of Locality: Skjerp 2 |
| (Object Id: 3289 38,02,00) |
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|
| Location |
| County: | Nordland | Municipality: | Rana (1833) |
| Map 1:50000: | Dunderlandsdal (2027-1) | Map 1:250000: | Mo i Rana |
| Coordinate system: | EU89-UTM Zone 33 |
| East: | 490882 m. | North: | 7368847 m. |
| Longitude: | 14.7956030 | Latitude: | 66.4388990 |
| Show on map |
|
|
| Resource |
| Resource Type: | Ferrous metals(Fe, Mn, Ti) | Resource Subtype: | Iron | |
| Element(s): | Fe |
| Resources and production |
| Activity: | Exploration | Reserves: | ||
| Operating method: | Historical production: |
Name of Locality: Skjerp 3 |
| (Object Id: 3280 38,04,00) |
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|
| Location |
| County: | Nordland | Municipality: | Rana (1833) |
| Map 1:50000: | Dunderlandsdal (2027-1) | Map 1:250000: | Mo i Rana |
| Coordinate system: | EU89-UTM Zone 33 |
| East: | 491332 m. | North: | 7369197 m. |
| Longitude: | 14.8056670 | Latitude: | 66.4420510 |
| Show on map |
|
|
| Resource |
| Resource Type: | Ferrous metals(Fe, Mn, Ti) | Resource Subtype: | Iron | |
| Element(s): | Fe |
| Resources and production |
| Activity: | Exploration | Reserves: | ||
| Operating method: | Historical production: |
Name of Locality: Skjerp 4 |
| (Object Id: 3287 38,05,00) |
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|
| Location |
| County: | Nordland | Municipality: | Rana (1833) |
| Map 1:50000: | Dunderlandsdal (2027-1) | Map 1:250000: | Mo i Rana |
| Coordinate system: | EU89-UTM Zone 33 |
| East: | 491732 m. | North: | 7369547 m. |
| Longitude: | 14.8146130 | Latitude: | 66.4452020 |
| Show on map |
|
|
| Resource |
| Resource Type: | Ferrous metals(Fe, Mn, Ti) | Resource Subtype: | Iron | |
| Element(s): | Fe |
| Resources and production |
| Activity: | Exploration | Reserves: | ||
| Operating method: | Historical production: |
Name of Locality: Skjerp 5 |
| (Object Id: 3281 38,06,00) |
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|
| Location |
| County: | Nordland | Municipality: | Rana (1833) |
| Map 1:50000: | Dunderlandsdal (2027-1) | Map 1:250000: | Mo i Rana |
| Coordinate system: | EU89-UTM Zone 33 |
| East: | 492082 m. | North: | 7369897 m. |
| Longitude: | 14.8224390 | Latitude: | 66.4483510 |
| Show on map |
|
|
| Resource |
| Resource Type: | Ferrous metals(Fe, Mn, Ti) | Resource Subtype: | Iron | |
| Element(s): | Fe |
| Resources and production |
| Activity: | Exploration | Reserves: | ||
| Operating method: | Historical production: |
Name of Locality: Skjerp 6 |
| (Object Id: 3283 38,07,00) |
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|
| Location |
| County: | Nordland | Municipality: | Rana (1833) |
| Map 1:50000: | Dunderlandsdal (2027-1) | Map 1:250000: | Mo i Rana |
| Coordinate system: | EU89-UTM Zone 33 |
| East: | 492382 m. | North: | 7370247 m. |
| Longitude: | 14.8291460 | Latitude: | 66.4514990 |
| Show on map |
|
|
| Resource |
| Resource Type: | Ferrous metals(Fe, Mn, Ti) | Resource Subtype: | Iron | |
| Element(s): | Fe |
| Resources and production |
| Activity: | Exploration | Reserves: | ||
| Operating method: | Historical production: |
Name of Locality: Skjerp 7- Skredmoen |
| (Object Id: 3282 38,08,00) |
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|
| Location |
| County: | Nordland | Municipality: | Rana (1833) |
| Map 1:50000: | Dunderlandsdal (2027-1) | Map 1:250000: | Mo i Rana |
| Coordinate system: | EU89-UTM Zone 33 |
| East: | 492582 m. | North: | 7370797 m. |
| Longitude: | 14.8335990 | Latitude: | 66.4564370 |
| Show on map |
|
|
| Resource |
| Resource Type: | Ferrous metals(Fe, Mn, Ti) | Resource Subtype: | Iron | |
| Element(s): | Fe |
| Resources and production |
| Activity: | Exploration | Reserves: | ||
| Operating method: | Historical production: |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| NO0593.01 | Bedrock |
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| NO0593.02 | Bedrock |
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| NO0593.03 | Bedrock |
|
| NB! All analyse values are shown at the end of the printout.: |
Name of Locality: Skjerp 8 - Skredbekken |
| (Object Id: 3286 38,09,00) |
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|
| Location |
| County: | Nordland | Municipality: | Rana (1833) |
| Map 1:50000: | Dunderlandsdal (2027-1) | Map 1:250000: | Mo i Rana |
| Coordinate system: | EU89-UTM Zone 33 |
| East: | 492857 m. | North: | 7371747 m. |
| Longitude: | 14.8397140 | Latitude: | 66.4649660 |
| Show on map |
|
|
| Resource |
| Resource Type: | Ferrous metals(Fe, Mn, Ti) | Resource Subtype: | Iron | |
| Element(s): | Fe |
| Resources and production |
| Activity: | Exploration | Reserves: | ||
| Operating method: | Historical production: |
Name of Locality: Skjerp 9 - Grotjørneng |
| (Object Id: 3285 38,10,00) |
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|
| Location |
| County: | Nordland | Municipality: | Rana (1833) |
| Map 1:50000: | Dunderlandsdal (2027-1) | Map 1:250000: | Mo i Rana |
| Coordinate system: | EU89-UTM Zone 33 |
| East: | 493032 m. | North: | 7372197 m. |
| Longitude: | 14.8436160 | Latitude: | 66.4690070 |
| Show on map |
|
|
| Resource |
| Resource Type: | Ferrous metals(Fe, Mn, Ti) | Resource Subtype: | Iron | |
| Element(s): | Fe |
| Resources and production |
| Activity: | Exploration | Reserves: | ||
| Operating method: | Historical production: |
Name of Locality: Skjerp 10 - Skillbekken |
| (Object Id: 3284 38,11,00) |
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|
| Location |
| County: | Nordland | Municipality: | Rana (1833) |
| Map 1:50000: | Dunderlandsdal (2027-1) | Map 1:250000: | Mo i Rana |
| Coordinate system: | EU89-UTM Zone 33 |
| East: | 493682 m. | North: | 7374097 m. |
| Longitude: | 14.8581090 | Latitude: | 66.4860650 |
| Show on map |
|
|
| Resource |
| Resource Type: | Ferrous metals(Fe, Mn, Ti) | Resource Subtype: | Iron | |
| Element(s): | Fe |
| Resources and production |
| Activity: | Exploration | Reserves: | ||
| Operating method: | Historical production: |
Analyse Results |
| from |
| Deposit Area 1833 - 038 Nord-Dunderland |
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# |
| NO0593.01 | Bedrock | 63 | 771 | 149 | 2 | 12 | -.3 | -2.0 |
| NO0593.02 | Bedrock | 73 | 444 | 301 | -1 | 10 | -.3 | -2.0 |
| NO0593.03 | Bedrock | 25 | 120 | 36 | 9 | 29 | -.3 | 3.0 |
| ------------------ |
| Sample No. | Pt# | Pd# | Rh# | As* | Cd* | Ba* | Mo* | Sb* | Bi* |
| NO0593.01 | -3.0 | -3.0 | -5.0 | 3 | 1.4 | 22 | 3.00 | -2 | -2 |
| NO0593.02 | -3.0 | -3.0 | -5.0 | -2 | 1.0 | 14 | 2.00 | -2 | -2 |
| NO0593.03 | -3.0 | -3.0 | -5.0 | 2 | 1.1 | 17 | 3.00 | -2 | -2 |
| ------------------ |
| Sample No. | S% | V* | Cr* | Mn* | Fe% | Th* | U* | W* | Sr* |
| NO0593.01 | .02 | 26 | 15 | 1573 | 23.11 | -2.00 | -5.00 | 2 | 67.0 |
| NO0593.02 | .02 | 17 | 11 | 725 | 20.08 | -2.00 | -5.00 | -2 | 65.0 |
| NO0593.03 | .00 | 27 | 14 | 1306 | 25.87 | 2.00 | -5.00 | 2 | 41.0 |
| ------------------ |
| Sample No. | La* | B* | |||||||
| NO0593.01 | 4.00 | 4 | |||||||
| NO0593.02 | 2.00 | -3 | |||||||
| NO0593.03 | 6.00 | 4 |
Oxide analyses |
( All values are in % ) |
| Sample No. | Sample Type | SiO2 | Al2O3 | TiO2 | Fe2O3 | MnO | MgO | CaO |
| Rana-5 | Bedrock | 37.82 | 0.39 | 0.02 | 59.51 | 0.05 | 0.05 | 0.94 |
| ------------------ |
| Sample No. | Na2O | K2O | P2O5 | Loss | Sum | ||||
| Rana-5 | -0.01 | 0.05 | 0.22 | 0.54 | 100.00 |
| The fact sheet was created on 06.05.2024 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2024 Geological Survey of Norway |