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THE ???? DATABASE | |||||
Occurence 0 - 000 FEIL | |||||
(Object Id: ) (Last updated: 25.02.2005) |
Belongs to the Province: Holleia |
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Location |
County: | Municipality: | Mangler () |
Map 1:50000: | Hønefoss (1815-3) | Map 1:250000: | Hamar |
Coordinate system: | UTM-Zone 33 - EUREF89/WGS84 |
East: | 558080 m. | North: | 6657800 m. |
Longitude: | 10.0429820 | Latitude: | 60.0532530 |
Show on map |
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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 |
Mineralization |
Era: | Proterozoic | Period: | Mesoproterozoic | |
Genesis: | Unknown | Form: | ||
Main texture: | Min. distribution: | Disseminated (<20 % ore minerals) |
Main grain size: | Main alteration: |
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 | Garnet | Subordinate mineral (1-10%) | |
Ore mineral | Pyrrhotite | Major mineral (>10%) |
Lithology: |
Relationship | Rock | Origin | |
Wall rock | Banded gneiss | ||
Metamorphic facies :Amphibolite |
Information(s) in free text format |
Free text |
The mine pit is situated right next to a tractor track about 100m W of a former sports field. The pit really is a small oblique trench following the foliation, about 3m deep with a 1H1.5m entry. There is a small 10m3 tailings heap on the lower side. Sulphides are hard to find, they occur finely dispersed fine grained pyrrhotite in a quartz rich schist with some garnet. It is said there used to be a larger pit just next to the nearest house, but that has been filled back and a new road has been put over it. That is probably the so-called Grefsrud pit described in the Norsk Hydro A/S report by Vokes & Vrålstad 1969. It is supposed to have been a 2m deep pit in pale green mica gneiss with very poor pyrite impregnation. Finally, there may have been a pit closer to the road, completely covered now. |
Fieldsamples |
Sample No. | Sample type | Miscellanrous | ||||
BU0379.01 | Dump |
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NB! All analyse values are shown at the end of the printout.: |
The fact sheet was created on 23.04.2024 |
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