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THE ORE DATABASE | |||||
Occurence 5043 - 051 Orklumpen | |||||
(Object Id: 337) (Last updated: 22.12.1998) |
Drill Cores: Orklumpen |
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Location |
County: | Trøndelag | Municipality: | Raarvihke (5043) |
Map 1:50000: | Jomafjellet (1924-1) | Map 1:250000: | Grong |
Coordinate system: | EU89-UTM Zone 33 | (Coordinates NOT confirmed) |
East: | 449281 m. | North: | 7195098 m. |
Longitude: | 13.9293820 | Latitude: | 64.8763110 |
Show on map |
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Resource |
Resource Type: | Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) | Resource Subtype: | Copper | |
Element(s): | Kis Cu |
Importance |
Raw material meaning: | Not Assessed (reg. 18.02.2015) |
Resources and production |
Activity: | Exploration | Reserves: | ||
Operating method: | Historical production: |
Mineralization |
Genesis: | Form: | |||
Main texture: | Min. distribution: |
Main grain size: | Main alteration: |
Strike/Dip: | Direction: | |||
Plunge: |
Stratigraphic classification of host rock |
Era: | Period: |
Province: | ||
Geotec.unit: | ||
Tectonic complex: | ||
Igneous complex: |
Group: | Formation: |
Information(s) in free text format |
Free text |
Forekomsten er beskrevet av Oftedahl (1958, skjerp nr. 5), men er senere ikke påvist. Geologiske, geokjemiske og geofysiske undersøkelser ble gjort av NGU i 1971 uten at mineraliseringer av betyding ble påvist. Berggrunnen består hovedsakelig av fyllitt som tilhører Røyrvikgruppen. Denne er lokalt noe rusten på grunn av svak sulfiddisseminasjon. |
Bibliography: |
From NGU's Reference Archive: |
Oftedahl, Christoffer , 1958 |
Oversikt over Grongfeltets skjerp og malmforekomster. |
;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.202;1-75 + fo pages |
Abstract: | |
Ore occurences of the Grong area: In the period 1910-1918 a great number of ore occurences were discovered in the Grong area. The late state geologist Steinar Foslie mapped the area in the years 1922-1931. Foslie also mapped all claims and occurences and made special field investigations in a few cases. This book presents a survey of all occurences chiefly based on the field observations of Foslie. In addition the present author has done some field work in connection with the three large deposits, Joma, Skorovass, and Gjersvik. The map, Plate 1, shows the areal geology and the location of the occurrences, numbered from 1 to 131. the ore of the occurrences is chiefly pyrite. The larger occurrences also contain some chalcopyrite and sphalerite etc. and the smaller occurrences contain ither pure pyrite with some magnetite. The Joma deposit (No. 1), contains about 15.5 mill. tons of ore. The ore zone forms an arc and is situated within a thick series of greenstones (Fig. 1). The Skorovass mine (No. 2), contains about 7,5 mill. tons of ore. The deposit is situated in a greenstone complex (Fig. 7), and is immediately surrounded by asid tuffs of quartz keratophyric composition (Table 1). |
Logn, Ø. , 1973 |
Geologiske, geofysiske og geokjemiske undersøkelser Grongfeltet/Grongprosjektet. |
;Norges geologiske undersøkelse;FAGRAPPORT;NGU-rapport; No.1065 |
Abstract: | |
Under oppdragsnummer 1065 ble det utført undersøkelser på en rekke objekter. Det vises til NGU Rapport nr. 84.091: Statusrapport for geofysikk utført i Nord-Trøndelag fylke (1984). |
The fact sheet was created on 06.05.2024 |
Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
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