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THE ORE DATABASE
Occurence 3007 - 032 Øytjern
(Object Id: 6193)
(Last updated: 25.02.2005)
Belongs to the Province: Holleia

Location
County: Viken Municipality: Ringerike (3007)
Map 1:50000: Hønefoss (1815-3) Map 1:250000: Hamar
Coordinate system: EU89-UTM Zone 32
East: 557469 m. North: 6667640 m.
Longitude: 10.0347960 Latitude: 60.1416800
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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: Historical production:


Operations
From - To Activity Comments
Pitting
1969 - 1969 Inspection Company/Institution :Norsk Hydro A/S
F.M. Vokes & T. Vrålstad
2000 - 2000 Inspection Company/Institution :NGU mineralressurser

Mineralization
Era: Proterozoic Period: Mesoproterozoic
Genesis: Unknown Form:
Main texture: Min. distribution: Disseminated (<20 % ore minerals)
Main grain size: Medium grained (1-3 mm) Main alteration: Silicification
Strike/Dip: Direction:
Plunge:
Stratigraphic classification of host rock
Era: Proterozoic Period: Mesoproterozoic
Province: South Norwegian Basement Province
Geotec.unit: Kongsberg Complex
Tectonic complex:
Igneous complex:
Group: Formation:

Mineralogy
Relationship Mineral Amount
Gangue mineral Quartz Major mineral (>10%)
Gangue mineral Amphibole Subordinate mineral (1-10%)
Gangue mineral Biotite Subordinate mineral (1-10%)
Ore mineral Pyrite Major mineral (>10%)

Lithology:
Relationship Rock Origin
Wall rock Banded gneiss
Metamorphic facies :Amphibolite

Information(s) in free text format
Free text
A minor ditch on top of the of the small hill range along the road between Langdalen and Øytjern, difficult to locate in dense, young pinewoods. The ditch is 1H1m by 0.5m deep. The mineralization consists of medium rich pyrite impregnation (<5vol%) of 1-2mm grains in quartz rich rock containing some biotite and amphibole. The mineralized zone is about 0.5m thick, but with very limited extent.


The fact sheet was created on 26.10.2021

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