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THE ORE DATABASE
Occurence 1101 - 015 Koltjern
(Object Id: 4993)
(Last updated: 17.02.2005)
Location
County: Rogaland Municipality: Eigersund (1101)
Map 1:50000: Egersund (1211-1) Map 1:250000: Mandal
Coordinate system: EU89-UTM Zone 32
East: 328649 m. North: 6478399 m.
Longitude: 6.0667290 Latitude: 58.4127320
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Resource
Resource Type: Ferroalloys (Cr,Ni,Co,V,Mo,W) Resource Subtype: Nickel
Element(s): Ni Cu
Importance
Raw material meaning: Little Importance (reg. 18.02.2015)

Resources and production
Activity: Pitting Reserves:
Operating method: Open pit and underground mining Historical production:


Mineralization
Era: Proterozoic Period: Neoproterozoic
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 05.05.2024
Questions or comments regarding the fact sheet can be emailed to:
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