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Norsk versjon | ||||
| THE INDUSTRIAL MINERAL DATABASE | |||||
| Deposit Area 1739 - 304 | |||||
| (Last updated 26.feb.2004) | |||||
Name of Deposit Area : Rennselvatnet |
| (Object Id : 1739,304,00,00) |
| Location |
| County : | Nord-Trøndelag (17) | Municipality : | Røyrvik (1739) |
| Map 1:50000: | Jomafjellet (1924-1) | Map 1:250000: | Grong |
| Marking point: | Longitude: | 13.8946760 | Latitude: | 64.9339500 |
| EU89-UTM Zone 33 | (Coordinates NOT confirmed) |
| X-coord: | 447750 m. | Y-coord: | 7201550 m. |
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| Commodity |
| Main Type: | Olivine | Sub Type: | Ultramafic (unspec.) |
| Importance |
| Public: | Not Assessed (reg. 18.02.2015) |
| Economical: | Not classified/evaluated |
Mineralization |
| Era: | Period: | |||
| Dating: | Method: | |||
| Genesis: | Form: | |||
| Main texture: | Min. distribution: |
| Main grain size: |
| Strike/Dip: | Direction: | |||
| Plunge: |
| Stratigraphic classification of host rock |
| Era: | Period: |
| Province: | ||
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| Igneous complex: |
| Group: | Formation: |
Bibliography: |
| From NGU's Reference Archive: |
| Roberts, David , 1997 |
| Grong. Berggrunnsgeologisk kart Grong M 1:250 000; trykt i farger |
| ;Norges geologiske undersøkelse;KART;1 kart pages |
| Abstract: | |
| Beskrivelsen finnes på kartet. |
| Fossen, H.; Kollung, S. , 1988 |
| Jomafjellet. Berggrunnskart; Jomafjellet; 19241; 1:50 000; sort/hvitt; |
| ;Norges geologiske undersøkelse;KART |
| Foslie, S. , 1957 |
| Namsvatnet med en del av Frøyningsfjell Geologisk kart. Berggrunnskart; Namsvatnet; 1:100 000; trykt i farger; NGU Publ.nr.196 |
| ;Norges geologiske undersøkelse;KART |
| Foslie, Steinar; Strand, Trygve , 1956 |
| Namsvatnet med en del av Frøyningsfjell. |
| ;Norges geologiske undersøkelse;KARTBESKRIVELSE; TIDSSKRIFTARTIKKEL;NGU; No.196;1-82 + fo pages |
| Abstract: | |
| The rocks of the area can be divided into three sharply separated groups. These are in ascending tectonic order: 1. The Børgefjell Massif in the north-eastern part of the area. 2. A complex of low-grade metamorphic sediments and volcanics. 3. A complex of high-grade metamorphic schists and gneisses in the west part of the area. The Børgefjell Massif is built up of granitic gneisses, porphyroblast schists rich in albite-oligoclase and micaschists, with subordinate bands of quartzite. There is a sharp tectonic boundary with a structural conformity to the overlying rocks. The Børgefjell Massif is thus a basal gneiss massif in the sense of Olaf Holtedahl. Probably its rocks are of pre-Cambrian age. The granitic gneisses and schists are in alternating, rather flat-lying sheets. East of Store Namsvatnet a beautiful anticlinal structure appears. |
| The fact sheet was created on 19.05.2024 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2024 Geological Survey of Norway |