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Norsk versjon | ||||
| THE ORE DATABASE | |||||
| Deposit Area 123 - 001 | |||||
| (Last updated 22.nov.2024) | |||||
Name of Deposit Area : FOSSUM |
| (Object Id : 0123,001,00,00) |
| Location |
| County : | Østfold (01) | Municipality : | Spydeberg (0123) |
| Map 1:50000: | Askim (1914-2) | Map 1:250000: | Oslo |
| Marking point: | Longitude: | 11.0980590 | Latitude: | 59.6018360 |
| EU89-UTM Zone 32 | (Coordinates NOT confirmed) |
| X-coord: | 618415 m. | Y-coord: | 6608940 m. |
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| Commodity |
| Main Type: | Ferroalloys (Cr,Ni,Co,V,Mo,W) | Sub Type: | Nickel | |
| Element(s): | Ni Cu |
| Production |
| Activity: | Mining | Reserves: | ||
| Prod. method: | Open pit mining | Production: | ||
| Prod. status: | Disused, closed | Volume of dump: |
| Importance |
| Public: | Little Importance (reg. 18.02.2015) |
| Economical: | Minor interest , (Confirmed 16.feb.2005 by Havard Gautneb) |
Mineralization |
| Era: | Proterozoic | Period: | Mesoproterozoic | |
| Dating: | Method: | |||
| Genesis: | Orthomagmatic formation | Form: | ||
| Main texture: | Min. distribution: |
| Main grain size: | Main alteration: |
| Strike/Dip: | Direction: | |||
| Plunge: |
| Stratigraphic classification of host rock |
| Era: | Proterozoic | Period: | Mesoproterozoic |
| Province: | East Norwegian Basement Province | |
| Geotec.unit: | Østfold Complex | |
| Tectonic complex: | ||
| Igneous complex: |
| Group: | Formation: |
Information(s) in free text format |
| Free text |
| Fossum skjerp er listet opp hos Foslie (1925). I følge Rekstad (1921) er det en liten forekomst av magnetkis med litt kobberkis, og magnetkisen skal inneholde nikkel. Det arbeidet som ble utført skal ha vært gjort av de samme som drev gruva i Romsås. |
| Location |
| Skov Larsens (1972) skriver at "Skjerpet findes umiddelbart syd for den sti der fører fra den gamle bro til den sydøstligste af Fossum-gårdene. Det er ca 150-200 m sydøst for gården." Koordinatene som oppgis er derimot til Fossum ved Askim og ikke Spydeberg. Flyttet fra EU89 UTM sone 33 280021 6613927 basert på overnevnte beskrivelse og DTM1. |
Bibliography: |
| From NGU's Reference Archive: |
| , 1940 |
| Aktenvermerk uber Nickelerz-Vorkommen in Smålenene. |
| ;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 1585;2 pages |
| Abstract: | |
| Notatet gir opplysninger om nikkel-magnetkisforekomster i Smålenene, Spydeberg, Hobøl, Skiptvedt, Svendal, Rakkestad, Eidsberg, Trøgstad og Askim. |
| Foslie, Steinar , 1925 |
| Syd-Norges gruber og malmforekomster. |
| ;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.126;1-89 + ka pages |
| Abstract: | |
| On the map accompanying this paper all the mines and ore deposits of Southern Norway are collected for the first time.The material has been gathered from printed and unprinted sources, communications from mining engineers and geologists, and through personal visits. Included are all mines and ore deposits of former, present and future importance. Among the 1407 deposits on the map, there are furthermore included all of doubtful value and many which are quite unworkable, but of geological interest, or those which mark the distribution of ore bearing formations. For this reason it has been necessary to mark the deposits with signs of different size. The object is only to facilitate a comprehensive view of the map, and is not an effort of economic classification, which for most of them would be quite impossible. The sizes refer to the presumed importance of the ore deposit, and has nothing to do with the extent of the mining operations. Mines and deposits out of work during the period 1913-1923 have been separately marked (see the legend), also deposits which were formerly of much greater importance than now. For the smallest mines and deposits no distinction has been made in these respects. Among them are represented partly those, which are in reality unworkable, partly those which are little investigated. |
| Rekstad, J. , 1921 |
| Eidsberg. De geologiske forhold innen rektangelkartet Eidsbergs område |
| ;Norges geologiske undersøkelse;KARTBESKRIVELSE; BOK;NGU; No.88;76 pages |
| Abstract: | |
| The territory is situated in south-eastern Norway to the east of the Oslofjord. It is an inland district which at no place reaches the sea. Glomma is the chief river which runs through the country in a southerly direction. The rocks occurring here are gneiss, granite, gabbro and schistose amphibolite, all of them of Archean age. Gneiss occupies a large area of the region. The rock has a varied appearance. Partly it is rich in mica (mica gneiss), partly it contains hornblende (hornblende-gneiss), partly it is coarse-grained and of granitoid texture. This latter form embraces also granite which has been deformed by powerful mechanical forces. This granite is intermixed with the gneiss in such a way as to make it impossible to separate them on the map. For the most part there is no distinctive demarcation between them, but the one passes into the other. The gneiss is mostly stratified, with well defined strike and dip. The granite intermixed is younger than the gneiss, but it belongs to the oldest known granites of Scandinavia. The gneiss is for the most part of igneous origin. Gabbro and amphibolite occur as numerous lenses injected into the gneiss. Connected with the gabbro here occurs nickelferous pyrrhotite. The greatest of these occurrences is at Romsås. |
| The fact sheet was created on 20.01.2025 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2025 Geological Survey of Norway |