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Norsk versjon | ||||
| THE ORE DATABASE | |||||
| Deposit Area 1853 - 018 | |||||
| (Last updated 07.feb.2024) | |||||
Name of Deposit Area : Bruelv |
| (Object Id : 1853,018,00,00) |
| Location |
| County : | Nordland (18) | Municipality : | Evenes (1853) |
| Map 1:50000: | Astafjorden (1332-2) | Map 1:250000: | Narvik |
| Marking point: | Longitude: | 16.9906660 | Latitude: | 68.5300810 |
| EU89-UTM Zone 33 | (Coordinates IS confirmed) |
| X-coord: | 581300 m. | Y-coord: | 7603280 m. |
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| Commodity |
| Main Type: | Ferrous metals(Fe, Mn, Ti) | Sub Type: | Iron | |
| Element(s): | Fe |
| Production |
| Activity: | Test mining | Reserves: | ||
| Prod. method: | Underground mining | Production: | ,15 thousand tons | |
| Prod. status: | Disused, closed | Volume of dump: | 50 m3 |
| Importance |
| Public: | Little Importance (reg. 18.02.2015) |
| Economical: | Minor interest , (Confirmed 25.feb.2005 by Agnes Raaness) |
Products |
| Element/product | Crude ore grade or quality | |
| FE_TOT | 20-30 % |
Operations |
| From - To | Activity | Comments | |
| 1898 - 1904 | Test mining | ||
| 1912 - 1912 | Core drilling | ||
| 1976 - 1977 | Geology | Company/Institution :Rana Gruber |
Mineralization |
| Era: | Proterozoic | Period: | Neoproterozoic | |
| Dating: | Method: | |||
| Genesis: | Sedex | Form: | Lens | |
| Main texture: | Banded | Min. distribution: | Massive (>50 % ore minerals) |
| Main grain size: | Medium grained (1-3 mm) | Main alteration: |
| Strike/Dip: | 240 / 40 | Direction: | 240 | |
| Plunge: | 15 |
| Stratigraphic classification of host rock |
| Era: | Proterozoic | Period: | Neoproterozoic |
| Province: | Caledonides | |
| Geotec.unit: | Seve-Køli Nappe Complex | |
| Tectonic complex: | Øvre allokton | |
| Igneous complex: |
| Group: | Bogen gruppen | 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 | Kalkspatmarmor | Sedimentary Original rock :Limestone |
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| Metamorphic facies :Amphibolite | |||
| Unknown | Glimmerskifer | Sedimentary Original rock :Greywacke |
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| Metamorphic facies :Amphibolite |
Structures |
| Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
| Unknown | Primary layering | Strike/Dip :240 / 40 | Syn-mineralisation ;...Effect :None |
Information(s) in free text format |
| Free text |
| Bruelv mt,-malm ligger 105 og 115 m.o.h De 2 Bruelv-stollene ligger 10 høydemeter rett under hverandre. Nedre stoll er 19m lang og her er 8m-malmen.Øvre stoll er 70m lang med mt,-impregnasjon og 1m mt,-malm. I mt.-malmen her opptrer svovelkis anriket i cm-tykke bånd (1-3 mm svovelkis-korn i grovkornet magnetitt) Det opptrer også diskordante tynne svovelkis-ganger med noe magnetkis og kobberkis inne i jernmalmen. Bruelv-tonnasjen er liten: Nedre stoll-malm:105 m.o.h.,tykkelse 8m,lengde 50m,dybde 20m. Spes.v. 3,2 (svarer til Fe total=25) som gir 25 600 tonn. Øvre stoll-malm:115 m.o.h. ,tykkelse 1m,lengde 50m,dybde 20m. Spes.v. 3,2 (svarer til Fe total=25) som gir 3 200 tonn. Det er boret 4 hull tilsammen 170m derav 17m i malm ved Bruelv. Boringen viser at malm med 30% Fe total er bare 1m og 2m tykk,mens tykkere malm ofte bare holder ca. 20% Fe total. |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| Bruelv-1 | Dump |
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| Bruelv-2 | Dump |
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| Bruelv-3 | Dump |
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| NO0280.01 | Bedrock |
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| NO0280.02 | Bedrock |
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| NO0280.03 | Bedrock |
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| NB! All analyse values are shown at the end of the printout.: |
Analyse Results |
| from |
| Deposit Area 1853 - 018 Bruelv |
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# |
| NO0280.01 | Bedrock | 20 | 46 | 2 | 32 | 16 | .1 | 2.0 |
| NO0280.02 | Bedrock | 30 | 17 | 2 | 57 | 29 | .1 | 20.0 |
| NO0280.03 | Bedrock | 134 | 67 | 3 | 58 | 27 | .2 | 4.0 |
| ------------------ |
| Sample No. | Pt# | Pd# | As* | Cd* | Ba* | Mo* | Sb* | Bi* | S% |
| NO0280.01 | 3.0 | 3.0 | 2 | .6 | 8 | 1.00 | 2 | 2 | .03 |
| NO0280.02 | 3.0 | 3.0 | 2 | .4 | 5 | 1.00 | 2 | 7 | .24 |
| NO0280.03 | 3.0 | 3.0 | 2 | .5 | 57 | 1.00 | 2 | 2 | 2.16 |
| ------------------ |
| Sample No. | V* | Cr* | Mn* | Fe% | Th* | U* | W* | Sr* | La* |
| NO0280.01 | 36 | 10 | 5427 | 17.48 | 2.00 | 5.00 | 1 | 88.0 | 6.00 |
| NO0280.02 | 17 | 13 | 4137 | 8.75 | 3.00 | 5.00 | 1 | 103.0 | 14.00 |
| NO0280.03 | 35 | 13 | 2001 | 10.66 | 4.00 | 5.00 | 1 | 51.0 | 13.00 |
| ------------------ |
| Sample No. | B* | ||||||||
| NO0280.01 | 2 | ||||||||
| NO0280.02 | 2 | ||||||||
| NO0280.03 | 5 |
Oxide analyses |
( All values are in % ) |
| Sample No. | Sample Type | SiO2 | Al2O3 | TiO2 | Fe2O3 | MnO | MgO | CaO |
| Bruelv-1 | Dump | 26.64 | 2.67 | 0.20 | 65.66 | 0.40 | 1.86 | 2.73 |
| Bruelv-2 | Dump | 45.61 | 8.44 | 0.30 | 30.45 | 2.74 | 2.63 | 5.52 |
| Bruelv-3 | Dump | 49.11 | 7.90 | 0.63 | 19.80 | 3.03 | 4.12 | 9.69 |
| ------------------ |
| Sample No. | Na2O | K2O | P2O5 | Loss | Sum | ||||
| Bruelv-1 | 0.85 | 0.24 | 0.34 | -0.86 | 101.00 | ||||
| Bruelv-2 | 0.56 | 1.07 | 0.33 | 1.31 | 99.00 | ||||
| Bruelv-3 | 1.27 | 0.25 | 0.36 | 2.72 | 99.00 |
| The fact sheet was created on 24.11.2024 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2024 Geological Survey of Norway |