(Last updated: 20.03.2024)
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Norsk versjon | ||||
| THE ORE DATABASE | |||||
| Occurence 1853 - 010 Øvre Kleven | |||||
| (Object Id: 2414) (Last updated: 20.03.2024) |
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| Location |
| County: | Nordland | Municipality: | Evenes (1853) |
| Map 1:50000: | Astafjorden (1332-2) | Map 1:250000: | Narvik |
| Coordinate system: | EU89-UTM Zone 33 |
| East: | 583132 m. | North: | 7602196 m. |
| Longitude: | 17.0346330 | Latitude: | 68.5198310 |
| 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: | Little Importance (reg. 18.02.2015) |
| Resources and production |
| Activity: | Mining | Reserves: | 413 thousand tons | |
| Operating method: | Open pit and underground mining | Historical production: | 300 thousand tons |
Products |
| Element/product | Crude ore grade or quality | Reg. date | |
| Fe-total | 21 % | 28.09.1992 |
Operations |
| From - To | Activity | Comments | |
| 1913 - 1914 | Regular production | Company/Institution :Ofoten malmfelt (engelsk) | |
| 1913 - 1923 | Core drilling | ||
| 1917 - 1923 | Regular production | Company/Institution :Beer Sonderheim (tysk) | |
| 1976 - 1976 | Geology | Company/Institution :Rana Gruber | |
| 2012 - 2014 | Geology | Company/Institution :NGU |
Mineralization |
| Era: | Proterozoic | Period: | Neoproterozoic | |
| Genesis: | Sedex | Form: | Layer | |
| Main texture: | Banded | Min. distribution: | Massive (>50 % ore minerals) |
| Main grain size: | Medium grained (1-3 mm) | Main alteration: |
| Strike/Dip: | 225 / 40 | Direction: | 260 | |
| Plunge: | 30 |
| Stratigraphic classification of host rock |
| Era: | Proterozoic | Period: | Neoproterozoic |
| Province: | Caledonides | |
| Geotec.unit: | Seve-Køli Nappe Complex | |
| Tectonic complex: | Øvre allokton | |
| Igneous complex: |
| Group: | Bogengruppen | Formation: | Håfjell jernmalmformasjon |
Mineralogy |
| Relationship | Mineral | Amount | |
| Gangue mineral | Quartz | Major mineral (>10%) | |
| Gangue mineral | Amphibole | Major mineral (>10%) | |
| Ore mineral | Magnetite | Major mineral (>10%) |
Lithology: |
| Relationship | Rock | Origin | |
| Unknown | Karbonatgl.skifer | Sedimentary Original rock :Greywacke |
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| Metamorphic facies :Amphibolite | |||
| Unknown | Amfibolitt | Extrusive Original rock :Basalt |
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| Metamorphic facies :Amphibolite |
Structures |
| Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
| Unknown | Primary layering | Strike/Dip :225 / 40 | Syn-mineralisation ;...Effect :None |
Information(s) in free text format |
| Free text |
| The Bogen Fe ore field consists of a number of workings over a strike length of c. 6 km. About 1.6 mill.t of magnetite ore was produced from three open pits with associated underground workings (Øvre and Nedre Kleven, Bergvik) between 1906 and 1939 (several periods). The ore occurs in several layers and lenses of semimassive ore, varying in thickness from less than 2 meters and up to c. 10 meters, typically separated by amphibolitic layers often with magnetite impregnation. The total thickness of the mineralized zone varies from c. 10 meters to 100-200 meters. The zone is strongly deformed and is folded into a number of recumbent tight to isoclinals fold structures, which have disrupted the ore layers and increased considerably the thickness in the fold closures. The mineralized zone is situated between calcareous mica schist (structurally below) and calcite marble (structurally above). The ore is generally banded/laminated on mm to cm scale, with alternating quartz, amphibole +/- biotite and magnetite layers. At places the ore contains thin manganese-rich or/and hematite-rich layers, typically in the structurally upper and lower parts, respectively. |
Bibliography: |
| References not to be found in NGU's Reference Archive.: |
| Søvegjarto, U. 1978: Bogen jernmalmfelt. Sluttrapport geologi. Int. rapp. Rana Gruber A/S. 10 sider, 51 bilag. |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| NO0272.01 | Bedrock |
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| NO0272.02 | Bedrock |
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| NO0272.03 | Bedrock |
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| NB! All analyse values are shown at the end of the printout.: |
Name of Locality: Øvre brudd |
| (Object Id: 39449 10,01,00) |
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| Location |
| County: | Nordland | Municipality: | Evenes (1853) |
| Map 1:50000: | Astafjorden (1332-2) | Map 1:250000: | Narvik |
| Coordinate system: | EU89-UTM Zone 33 |
| East: | 583174 m. | North: | 7602232 m. |
| Longitude: | 17.0356920 | Latitude: | 68.5201380 |
| Show on map |
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| Resource |
| Resource Type: | Ferrous metals(Fe, Mn, Ti) | Resource Subtype: | Iron | |
| Element(s): | Fe |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| ØKleven-1 | Bedrock |
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| NB! All analyse values are shown at the end of the printout.: |
Name of Locality: Midtre brudd |
| (Object Id: 39450 10,02,00) |
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| Location |
| County: | Nordland | Municipality: | Evenes (1853) |
| Map 1:50000: | Astafjorden (1332-2) | Map 1:250000: | Narvik |
| Coordinate system: | EU89-UTM Zone 33 |
| East: | 583153 m. | North: | 7602143 m. |
| Longitude: | 17.0351070 | Latitude: | 68.5193550 |
| Show on map |
|
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| Resource |
| Resource Type: | Ferrous metals(Fe, Mn, Ti) | Resource Subtype: | Iron | |
| Element(s): | Fe |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| ØKleven-3 | Bedrock |
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| NB! All analyse values are shown at the end of the printout.: |
Analyse Results |
| from |
| Deposit Area 1853 - 010 Øvre Kleven |
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# |
| NO0272.01 | Bedrock | 11 | 123 | 32 | 12 | 7 | .2 | 2.0 |
| NO0272.02 | Bedrock | 71 | 32 | 4 | 13 | 10 | .2 | 4.0 |
| NO0272.03 | Bedrock | 12 | 37 | 2 | 18 | 7 | .1 | 2.0 |
| ------------------ |
| Sample No. | Pt# | Pd# | As* | Cd* | Ba* | Mo* | Sb* | Bi* | S% |
| NO0272.01 | 3.0 | 3.0 | 2 | .7 | 20 | 1.00 | 2 | 2 | .06 |
| NO0272.02 | 3.0 | 3.0 | 2 | .2 | 51 | 1.00 | 2 | 6 | 2.28 |
| NO0272.03 | 3.0 | 3.0 | 2 | .2 | 102 | 1.00 | 2 | 2 | .04 |
| ------------------ |
| Sample No. | V* | Cr* | Mn* | Fe% | Th* | U* | W* | Sr* | La* |
| NO0272.01 | 29 | 16 | 1242 | 12.72 | 3.00 | 5.00 | 1 | 234.0 | 10.00 |
| NO0272.02 | 38 | 17 | 214 | 11.70 | 2.00 | 5.00 | 1 | 48.0 | 8.00 |
| NO0272.03 | 40 | 26 | 310 | 21.18 | 3.00 | 5.00 | 1 | 66.0 | 13.00 |
| ------------------ |
| Sample No. | B* | ||||||||
| NO0272.01 | 3 | ||||||||
| NO0272.02 | 2 | ||||||||
| NO0272.03 | 2 |
Oxide analyses |
( All values are in % ) |
| Sample No. | Sample Type | SiO2 | Al2O3 | TiO2 | Fe2O3 | MnO | MgO | CaO |
| ØKleven-1 | Bedrock | 36.70 | 6.10 | 0.27 | 34.70 | 0.37 | 5.43 | 11.66 |
| ØKleven-3 | Bedrock | 44.41 | 5.86 | 0.31 | 38.96 | 0.16 | 3.91 | 5.58 |
| ------------------ |
| Sample No. | Na2O | K2O | P2O5 | Loss | Sum | ||||
| ØKleven-1 | 1.00 | 0.38 | 0.45 | 1.36 | 98.00 | ||||
| ØKleven-3 | 0.82 | 0.24 | 0.48 | -0.67 | 100.00 |
| The fact sheet was created on 27.04.2024 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2024 Geological Survey of Norway |