(Last updated: 08.05.2006)
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Norsk versjon | ||||
| THE ???? DATABASE | |||||
| Occurence 0 - 000 FEIL | |||||
| (Object Id: ) (Last updated: 08.05.2006) |
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| Location |
| County: | Municipality: | Mangler () |
| Map 1:50000: | Kvikneskogen (1619-4) | Map 1:250000: | Røros |
| Coordinate system: | UTM-Zone 33 - EUREF89/WGS84 |
| East: | 568550 m. | North: | 6908110 m. |
| Longitude: | 10.3232900 | Latitude: | 62.2986300 |
| Show on map |
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| Resource |
| Resource Type: | Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) | Resource Subtype: | Sulphides | |
| Element(s): | Kis |
| 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 | |
| 1998 - 1998 | Sampling | Company/Institution :NGU |
Mineralization |
| Era: | Proterozoic | Period: | Neoproterozoic | |
| Genesis: | Volcex | Form: | Lens | |
| Main texture: | Structureless | Min. distribution: | Semi-massive (20-50 % ore minerals) |
| Main grain size: | Fine grained (< 1 mm) | Main alteration: | Biotitisation |
| Strike/Dip: | 30 / 65 | Direction: | ||
| Plunge: |
| Stratigraphic classification of host rock |
| Era: | Proterozoic | Period: | Neoproterozoic |
| Province: | Caledonides | |
| Geotec.unit: | Trondheim Nappe Complex | |
| Tectonic complex: | Gula Nappe | |
| Igneous complex: |
| Group: | Gula | Formation: |
Mineralogy |
| Relationship | Mineral | Amount | |
| Gangue mineral | Quartz | Major mineral (>10%) | |
| Gangue mineral | Amphibole | Subordinate mineral (1-10%) | |
| Ore mineral | Pyrrhotite | Major mineral (>10%) | |
| Ore mineral | Magnetite | Subordinate mineral (1-10%) | |
| Ore mineral | Hematite | Accessory mineral (<1%) | |
| Ore mineral | Pyrite | Accessory mineral (<1%) | |
| Ore mineral | Chalcopyrite | Accessory mineral (<1%) |
Lithology: |
| Relationship | Rock | Origin | |
| Wall rock | Phyllitic mica schist | Sedimentary Original rock :Argillaceous sediment |
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| Metamorphic facies :Amphibolite | |||
| Wall rock | Amphibolite | Extrusive Original rock :Basalt |
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| Metamorphic facies :Amphibolite |
Structures |
| Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
| Wall rock | Schistosity | Strike/Dip :20 / 70 | Post-mineralisation ;...Effect :Modifies | |
| Wall rock | Foliation | Strike/Dip :30 / 65 | Post-mineralisation ;...Effect :Modifies |
Information(s) in free text format |
| Free text |
| Skjerpet ligger på¨sørsida av en liten rygg ca. 300 m nordvest for Strålbergsetra. En grop på 3 x 3 m som er opptil 1 m dyp er utsprengt. Det er usikkert når skjerpingen foregikk, men det er inntegnet på et kart over Rødalsfeltet fra 1910 (Aalen 1910). Mineraliseringen er 20-30 cm mektig og består av en minimum 10 cm bred sone med massiv magnetkis (prøve .01) omgitt av svakere disseminasjon av magnetkis i kvarts-amfibol rik grunnmasse. Lokalt finnes biotittanrikning og tynne karbonatårer. Den mineraliserte sona ligger i finkornet amfibolitt med foliasjon 30°/65°. Ca. 5 m vest for skjerpet finnes fyllittisk glimmerskifer som ligger tektonostratigrafisk under amfibolitten. Rustsonen fortsetter videre mot nordnordøst men kun svak disseminasjon av magnetkis forekommer. |
| Photo(s) from the Deposit area: |
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Bibliography: |
| From NGU's Reference Archive: |
| Nilsen, Odd , 1978 |
| Caledonian sulphide deposits and minor iron-formations from the southern Trondheim region, Norway. |
| ;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.340;35-85 + k pages |
| Abstract: | |
| Within the southern and central parts of the Trondheim region of the Norwegian Caledonides a great number of small, stratabound cupriferous pyrite deposits are confined to mafic metavolcanics of the Gula, Støren and Fundsjø Groups of the Lower Palaeozoic succession. The deposits occuring within, or in close contact with the metavolcanics are characterized by their association with minor manganiferous oxide/silicate iron-formations - better known as "vasskis" ore type - within the metamorphic low-grade areas. The iron-fprmations of the metamorphic higher grade terrains on the other hand, which are extensively developed within the Gula Group, are mostly of a pyrrhotitic sulphide/silicate type and sulphurization processes are thought to have played an important role during the metamorphism. The pyrite deposits occurring adjacent to the metavolcanics bear no relationship to the iron-formations. They are embedded in pelitic, often carbonaceous assemblages (Gula Group) or within tuffitic members of the volcanogene Støren Group, and they are thought to represent re-sedimented (reworked) deposits. The pyrite deposits display varying degree of metamorphic reconstitution and a tectonic control has apparently determined their disc- or ruler-shaped morphology. |
| Aalen, O. E. , 1910 |
| Rødals grube. Oversiktskart 1:2 000. |
| ;Norges geologiske undersøkelse;KART;Bergarkivet; No.K 1030 |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| HE0116.01 | Bedrock |
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| NB! All analyse values are shown at the end of the printout.: |
| The fact sheet was created on 03.05.2024 |
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