(Last updated: 26.01.2005)
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Norsk versjon | ||||
| THE ORE DATABASE | |||||
| Occurence 5605 - 105 Bjørnevatnet | |||||
| (Object Id: 2013) (Last updated: 26.01.2005) |
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| Location |
| County: | Finnmark | Municipality: | Sør-Varanger (5605) |
| Map 1:50000: | Høybuktmoen (2434-3) | Map 1:250000: | Kirkenes |
| Coordinate system: | EU89-UTM Zone 36 |
| East: | 383252 m. | North: | 7728684 m. |
| Longitude: | 29.9921380 | Latitude: | 69.6407470 |
| 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: | Exploration | Reserves: | ||
| Operating method: | Historical production: |
Mineralization |
| Era: | Archean | Period: | ||
| Genesis: | Sedex | Form: | Layer | |
| Main texture: | Banded | Min. distribution: | Semi-massive (20-50 % ore minerals) |
| Main grain size: | Fine grained (< 1 mm) | Main alteration: |
| Strike/Dip: | 345 / 65 | Direction: | ||
| Plunge: |
| Stratigraphic classification of host rock |
| Era: | Archean | Period: |
| Province: | Troms-Finnmark Basement Province | |
| Geotec.unit: | ||
| Tectonic complex: | ||
| Igneous complex: |
| Group: | Bjørnevann Group | Formation: | Bjørnefjell Formation |
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 | |
| Wall rock | Quartzite | Sedimentary Original rock :Sandstone |
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| Metamorphic facies :Amphibolite | |||
| Wall rock | Hornblende gneiss | Extrusive Original rock :Basalt |
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| Metamorphic facies :Amphibolite |
Structures |
| Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
| Host rock | Foliation | Strike/Dip :345 / 65 | Post-mineralisation ;...Effect :None | |
| Host rock | Primary layering | Strike/Dip :345 / 65 | Syn-mineralisation ;...Effect :Controls |
Information(s) in free text format |
| Free text |
| Innen Bjørnefjellformasjonen finnes flere horisonter med kvartsbåndet jernmalm. En sone finnes nær Pesktindkonglomeratet, og er funnet som spredte linser på stort sett under 1 m mektighet. Disse er stort sett uten amfibolitt/hornblendegneis, men i et begrenset område ved det nedtappede Bjørnevatnet følger også hornblendegneis. Kvaliteten på malmen er stort sett svak, 5 - 20 % Fe magn., men lokalt, bl.a. ved Bjørnevatnet, er kvaliteten stedvis bedre. Bjørnevatnet-mineraliseringen ligger i kanten av tippen fra Bjørnevannsforekomsten. |
Bibliography: |
| References not to be found in NGU's Reference Archive.: |
| Iversen, E. 1990: Kartblad 2434 III - Høybuktmoen, kartbladbeskrivelse. Int. rapp. 2170. Prospektering A/S. |
| The fact sheet was created on 04.05.2024 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2024 Geological Survey of Norway |