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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: | 583840 m. | North: | 6914300 m. |
Longitude: | 10.6209630 | Latitude: | 62.3510500 |
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 | |
Pitting | |||
1998 - 1998 | Sampling | Company/Institution :NGU mineralressurser |
Mineralization |
Era: | Paleozoic | Period: | Ordovician | |
Genesis: | Chemical sediment | Form: | Layer | |
Main texture: | Banded | Min. distribution: | Semi-massive (20-50 % ore minerals) |
Main grain size: | Fine grained (< 1 mm) | Main alteration: |
Strike/Dip: | 64 / 90 | Direction: | ||
Plunge: |
Stratigraphic classification of host rock |
Era: | Paleozoic | Period: | Ordovician |
Province: | Caledonides | |
Geotec.unit: | Trondheim Nappe Complex | |
Tectonic complex: | Gula Nappe | |
Igneous complex: |
Group: | Gula Group | Formation: |
Mineralogy |
Relationship | Mineral | Amount | |
Gangue mineral | Muscovite | Major mineral (>10%) | |
Gangue mineral | Quartz | Major mineral (>10%) | |
Gangue mineral | Garnet | Subordinate mineral (1-10%) | |
Gangue mineral | Biotite | Subordinate mineral (1-10%) | |
Gangue mineral | Graphite | Subordinate mineral (1-10%) | |
Gangue mineral | Chlorite | Subordinate mineral (1-10%) | |
Ore mineral | Pyrrhotite | Major mineral (>10%) | |
Ore mineral | Magnetite | Accessory mineral (<1%) |
Lithology: |
Relationship | Rock | Origin | |
Host rock | Biotite-muscovite schist | Sedimentary Original rock :Greywacke |
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Metamorphic facies :Greenschist |
Structures |
Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
Host rock | Foliation | Strike/Dip :64 / 90 | Post-mineralisation ;...Effect :Controls |
Information(s) in free text format |
Free text |
Skjerpet ligger ca. 1 km nordvest for Moan-Langsætra og like i skoggrensa. Det er sprengt på flere steder over en strekning på 50 m langs strøket, dvs. i NNØ-SSV retning. Hovedrøsken er en grop 3.5 m på tvers av strøket, 2 m bred og inntil 1 m dyp. Den mineraliserte sonen er ca. 3.5 m mektig og synes å være isoklinalt foldet. Det er flere parallelle soner i skjerpområdet og en 1 m bred rustsone 10 m øst for hovedrøsken sees å være foldet inn i den omgivende muskovittskiferen. Ellers kan sonen følges sør-sørøstover og opp på snaufjellet i ca. 700 m, hvor mektigheten avtar til ca.1 m. Ca. 100 m vest er det en parallellsone hvor det også er røsket i en skrent (Rødhammer - HE0160). Mineraliseringen består vesentlig av finkornet rik impregnasjon til semimassiv båndet mineralisering (1-10 mm skala) av magnetkis i grafittrik muskovitt-kvartsskifer. Magnetkis opptrer også impregnert i kvartslinser i skiferen. Mot sidebergart, men også som linser i denne opptrer biotitt-granat-klorittskifer med spredt magnetkis. Denne går gradvis over i muskovittskifer med hyppige biotitt-blaster og spredt granat som igjen går over i uomvandlet psammittisk muskovittskifer. |
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. |
Fieldsamples |
Sample No. | Sample type | Miscellanrous | ||||
HE0130.01 | Dump |
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HE0130.02 | Bedrock |
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HE0130.03 | Bedrock |
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NB! All analyse values are shown at the end of the printout.: |
The fact sheet was created on 04.05.2024 |
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