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Norsk versjon | ||||
| THE ORE DATABASE | |||||
| Deposit Area 1101 - 015 | |||||
| (Last updated 17.feb.2005) | |||||
Name of Deposit Area : Koltjern |
| (Object Id : 1101,015,00,00) |
| Location |
| County : | Rogaland (11) | Municipality : | Eigersund (1101) |
| Map 1:50000: | Egersund (1211-1) | Map 1:250000: | Mandal |
| Marking point: | Longitude: | 6.0667290 | Latitude: | 58.4127320 |
| EU89-UTM Zone 32 |
| X-coord: | 328649 m. | Y-coord: | 6478399 m. |
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| Commodity |
| Main Type: | Ferroalloys (Cr,Ni,Co,V,Mo,W) | Sub Type: | Nickel | |
| Element(s): | Ni Cu |
| Production |
| Activity: | Pitting | Reserves: | ||
| Prod. method: | Open pit and underground mining | Production: | ||
| Prod. status: | Volume of dump: | 6 m3 |
| Importance |
| Public: | Little Importance (reg. 18.02.2015) |
| Economical: | Minor interest , (Confirmed 17.feb.2005 by Lars Petter Nilsson) |
Mineralization |
| Era: | Proterozoic | Period: | Neoproterozoic | |
| Dating: | Method: | |||
| Genesis: | Orthomagmatic formation | Form: | Lens | |
| Main texture: | Min. distribution: | Massive (>50 % ore minerals) |
| Main grain size: | Coarse grained (> 3 mm) | Main alteration: |
| Strike/Dip: | Direction: | |||
| Plunge: |
| Stratigraphic classification of host rock |
| Era: | Proterozoic | Period: | Neoproterozoic |
| Province: | South Norwegian Basement Province | |
| Geotec.unit: | Agder Complex | |
| Tectonic complex: | ||
| Igneous complex: | Egersund Anorthosite Complex |
| Group: | Formation: |
Mineralogy |
| Relationship | Mineral | Amount | |
| Ore mineral | Ilmenite | Major mineral (>10%) |
Lithology: |
| Relationship | Rock | Origin | |
| Unknown | Granodioritt |
Information(s) in free text format |
| Free text |
| Områdebergart er en massiv ujevnkornig granodioritt som lokalt nær drften er tildels meget grovkornig. Drift: Det skutt ut en loddsynk 2x3 m og dybde ca.1.0 m i en kompakt linse av ilmenitt. Det finnes små aggregater av ilmenitt også i bergarten, men helt ubetydelig. Uttatt malm ligger som velte ved synken. |
| The fact sheet was created on 17.05.2024 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2024 Geological Survey of Norway |