(Last updated: 08.11.2019)
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Norsk versjon | ||||
| THE ???? DATABASE | |||||
| Occurence 0 - 000 FEIL | |||||
| (Object Id: ) (Last updated: 08.11.2019) |
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| Location |
| County: | Municipality: | Mangler () |
| Map 1:50000: | Haltdalen (1620-1) | Map 1:250000: | Røros |
| Coordinate system: | UTM-Zone 33 - EUREF89/WGS84 |
| East: | 591000 m. | North: | 6976830 m. |
| Longitude: | 10.7927360 | Latitude: | 62.9103300 |
| 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): | Fe Cu Zn |
| Importance |
| Raw material meaning: | Not Assessed (reg. 18.02.2015) |
| Resources and production |
| Activity: | Pitting | Reserves: | ||
| Operating method: | Historical production: |
Operations |
| From - To | Activity | Comments | |
| 1997 - 1997 | Sampling | Company/Institution :NGU-Malmreg. |
Mineralization |
| Genesis: | Sedex | Form: | Lens | |
| Main texture: | Banded | Min. distribution: | Semi-massive (20-50 % ore minerals) |
| Main grain size: | Fine grained (< 1 mm) | Main alteration: |
| Strike/Dip: | 70 / 35 | Direction: | ||
| Plunge: |
| Stratigraphic classification of host rock |
| Era: | Period: |
| Province: | Caledonides | |
| Geotec.unit: | Trondheim Nappe Complex | |
| Tectonic complex: | Gula Nappe | |
| Igneous complex: |
| Group: | Gula | Formation: | Singsås |
Mineralogy |
| Relationship | Mineral | Amount | |
| Gangue mineral | Graphite | Major mineral (>10%) | |
| Gangue mineral | Quartz | Major mineral (>10%) | |
| Gangue mineral | Biotite | Major mineral (>10%) | |
| Gangue mineral | Amphibole | Subordinate mineral (1-10%) | |
| Gangue mineral | Muscovite | Subordinate mineral (1-10%) | |
| Ore mineral | Pyrite | Major mineral (>10%) | |
| Ore mineral | Pyrrhotite | Major mineral (>10%) | |
| Ore mineral | Galena | Accessory mineral (<1%) | |
| Ore mineral | Sphalerite | Accessory mineral (<1%) | |
| Ore mineral | Chalcopyrite | Accessory mineral (<1%) | |
| Ore mineral | Pyrargyrite | Accessory mineral (<1%) |
Lithology: |
| Relationship | Rock | Origin | |
| Host rock | Black schist | Sedimentary Original rock :Bituminous silty mudstone |
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| Metamorphic facies :Greenschist | |||
| Wall rock | Mica schist | Sedimentary Original rock :Greywacke |
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| Metamorphic facies :Greenschist | |||
| Wall rock | Quartzite | Sedimentary Original rock :Sandstone |
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| Metamorphic facies :Greenschist |
Structures |
| Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
| Wall rock | Foliation | Strike/Dip :70 / 35 | Post-mineralisation ;...Effect :None |
Information(s) in free text format |
| Description |
| Adkomst f. eks. via bilvei til Henddalen. Fra veiens ende går det sti sørover ca. 1 km på vestsiden av Henda, deretter ca. 2 km i myrlendt terreng sørover opp Grisbudalen. Skjerpet ligger ca. 100 m SSV for nedfallen tømmerhytte og 5 m SØ for Grisbubekken. Det lille skjerpet (< 1 m3 tipp) er overgrodd og det er vanskelig å gjøre observasjoner. Strøk og fall varierer på de få stedene hengbergarten - dels rusten glimmerskifer med kvartsittinnslag - er blottet, fra 70/35 (30 m sør for skjerpet) til 125/30 (i bekken 30 m SV for skjerpet). Mineraliseringen er ikke blottet utenfor det overgrodde skjerpet, så det er ikke mulig å si noe om utstrekning eller mektighet. Vertsbergarten til den stratabundne, semimassive (til disseminerte) sulfidmineraliseringen er svartskifer med kvartsbånd /-boller / -linser og i partier endel amfibol. Sulfidmineralogien domineres av magnetkis med noe mindre mengde svovelkis og spor av kobberkis og sinkblende. Magnetkisen er finkornet og opptrer i stringere mer eller mindre konkordant med skifrigheten (småfoldet), mens en mer grovkornig svovelkis finnes i mm-mektige bånd og som impregnasjon. |
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 | ||||
| ST0284.01 | Dump |
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| ST0284.02 | Dump |
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| NB! All analyse values are shown at the end of the printout.: |
| The fact sheet was created on 28.04.2024 |
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